Games like Planets Under Attack on Steam

For those who prefer not to search, lists of the most played, top deals and best free games like Planets Under Attack are available at the bottom of the page.

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Anomaly 2 Anomaly 2 is a sequel to the critically acclaimed Anomaly Warzone Earth. Maintaining the core elements of the original, Anomaly 2 adds plenty of new features: unit morphing, over million tactical combinations, post-apo world and tower defense vs tower offense multiplayer mode.

Similarity 58%
Price -90% 1.39€
Rating 7.6
Release 15 May 2013
Anomaly: Warzone Earth Lead an armored squad through the perils of this reversed tower defense action-strategy game!

Similarity 58%
Price -96% 0.46€
Rating 8.4
Release 08 Apr 2011
Space industrial empire This is a idle game modeled on industrial building gameplay. It will be three-dimensional, complex industrial assembly line, easy, simple plane conveyor belt. At the same time to join the battleship assembly, space campaign, character development, giant construction, trade orders and other gameplay!

Similarity 58%
Price -10% 5.30€
Rating 8.2
Release 24 May 2024
Cubetractor WINNER: IGF China award for BEST GAME!Cubetractor is a neo-retroesque action-strategy-puzzle hybrid where you defeat enemies through an unconventional cube-pulling, turret-buildling mechanic. The game carries elements of a reverse tower defence and a grounded bullet-hell dodger to deliver a unique gameplay experience presented in a...

Similarity 58%
Price -90% 0.43€
Rating 7.1
Release 29 May 2013
Eador. Imperium Hire heroes, build an army, prevail in battles and try to keep your empire intact in the face of grave danger. Eador. Imperium is a new chapter in Eador series, known for its unique blend of grand strategy, turn-based tactics and RPG elements.

Similarity 58%
Price -71% 5.80€
Rating 7.2
Release 27 Jan 2017
Afghanistan '11 Afghanistan '11 is the sequel to the highly praised and innovative Vietnam '65. It enhances and builds on it: Afghanistan '11 changes the paradigm of wargaming and manages to bring Counter-Insurgency and guerrilla warfare to your screen, properly represented thanks to a revolutionary gameplay formula!

Similarity 58%
Price -97% 1.08€
Rating 7.0
Release 23 Mar 2017
CoH 2 - The Western Front Armies: Oberkommando West This individual army for COH2 allows you to access all existing COH2 maps in auto-match, and play against all other existing factions in multiplayer. It can also be obtained at a discount by acquiring The Western Front Armies multiplayer standalone, where it is bundled with the USF army.

Similarity 58%
Price -75% 2.99€
Rating 7.4
Release 23 Jun 2014
Battle Worlds: Kronos Battle Worlds: Kronos is a classic turn-based strategy game in the tradition of Battle Isle, Advance Wars and Panzer General. Have you ever wondered what games like that would look like today? Well, we did. As a result, we decided to develope Battle Worlds: Kronos.

Similarity 57%
Price -98% 0.48€
Rating 6.4
Release 04 Nov 2013
Sword of the Stars: Complete Collection Sword of the Stars: Complete Collection is the original Sword of the Stars games and the three expansions Born of Blood, A Murder of Crows and Argos Naval Yard. It is the year 2405, and human scientists have discovered a new technology that allows travel from star to star at speeds faster than light.

Similarity 57%
Price -95% 0.51€
Rating 8.2
Release 04 Jun 2010
Fieldrunners Fieldrunners is now available on Steam! Download it now to play the hit tower defense game critics and fans have been raving about. Descend into the world of Fieldrunners, the most anticipated and visually stunning game in tower defense history!

Similarity 57%
Price -81% 0.77€
Rating 6.2
Release 24 May 2012
Crush Your Enemies Go back to the awesome glory days of Real-Time Strategy games. Crush Your Enemies has everything you love of the genre: Planning, choosing different types of units, managing resources, taking enemy territory and outwitting your opponent with the ingenious formations of your men.

Similarity 57%
Price -92% 0.86€
Rating 7.7
Release 13 Jul 2016
Strata Simple. Elegant. Challenging.

Similarity 56%
Price -87% 0.88€
Rating 8.1
Release 29 May 2014
Tribloos 2 The Tribloos 2 is the sequel to the best-selling time management game, The Tribloos.Trey's village is under threat once more. Before there was only one storm to worry about, now there have been many and Matilda the dragon is being tired out trying to blow them all away!Can You Help Trey Save His Island?

Similarity 56%
Price -92% 0.35€
Rating 7.8
Release 30 Jan 2014
Heat Signature Heat Signature is a game from the developers of Gunpoint where you break into spaceships, make terrible mistakes, and think of clever ways out of them. You take a mission, fly to the target ship, sneak inside, and make clever use of your gadgets to distract, ambush and take out the crew.

Similarity 56%
Price -96% 0.60€
Rating 9.2
Release 21 Sep 2017
Star Wolves Star wolves is a 3D space RPG with deep strategy and tactical elements. The game thrusts players into a world of freelance space hunters in the XXI-XXII century A.D. during a time of political crisis for the all-powerful Empire and the three mega-corporations that control all the known worlds.

Similarity 56%
Price -84% 0.66€
Rating 7.9
Release 02 Mar 2010
Stellaris Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities.

Similarity 56%
Price -85% 6.07€
Rating 8.5
Release 09 May 2016
Space Empires V Space Empires V is the latest edition in the Space Empires series. This new chapter completely updates the UI and takes the player into a real-time rendered 3D universe. Watch space battles played out in glorious detail and realistic effects. Expand, Explore, Exploit, and Exterminate in a huge living breathing galaxy.

Similarity 56%
Price -80% 3.99€
Rating 6.9
Release 16 Oct 2006
Plague Inc: Evolved Plague Inc: Evolved is a unique mix of high strategy and terrifyingly realistic simulation. Your pathogen has just infected 'Patient Zero' - now you must bring about the end of human history by evolving a deadly, global Plague whilst adapting against everything humanity can do to defend itself.

Similarity 56%
Price -66% 5.17€
Rating 9.3
Release 18 Feb 2016
Buzz Aldrin's Space Program Manager Space Program Manager (SPM) is the ultimate game of space exploration. It is the mid 1950s and the race for dominance between the US and the Soviet Union is about to move into a new dimension: space.

Similarity 56%
Price -98% 0.77€
Rating 7.3
Release 31 Oct 2014
Battlestar Galactica Deadlock In Battlestar Galactica Deadlock™ you’ll take command of the Colonial Fleet in defense of the Twelve Colonies during the First Cylon War. Lead many different types of ships in this 3D tactical game. Every decision counts, your strategy will be vital – can you ensure mankind’s survival?

Similarity 56%
Price -99% 0.48€
Rating 8.1
Release 31 Aug 2017
Anomaly Defenders Anomaly Defenders is the closing installment of the Anomaly series. The original incarnation of the Tower Offense sub-genre had players controlling humans fighting alien invaders. Now, the tables have turned. The human counterattack is underway and the alien homeworld is under threat.

Similarity 55%
Price -90% 0.99€
Rating 7.3
Release 29 May 2014
Natural Selection 2 A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!

Similarity 55%
Price -49% 2.59€
Rating 8.3
Release 30 Oct 2012
Terraforming Mars The taming of the Red Planet has begun! Corporations are competing to transform Mars into a habitable planet by spending vast resources and using innovative technology to raise temperature, create a breathable atmosphere, and make oceans of water.

Similarity 55%
Price -97% 0.75€
Rating 7.0
Release 17 Oct 2018
Fibbage XL NOTE: This game first appeared in The Jackbox Party Pack. It’s Fibbage XL – The Hilarious Bluffing Party Game in standalone form! Fool your friends with your lies, avoid theirs, and find the (usually outrageous) truth. “The mayor of Rabbit Hash, Kentucky is a ____.” Baby? Rabbit? Ham sandwich? Go!

Similarity 55%
Price -98% 0.22€
Rating 8.7
Release 24 Mar 2016

Most played games like Planets Under Attack on Steam

Take a look at the top games like Planets Under Attack that are currently attracting the largest player bases on the Steam platform, as of June 16th 2025.

1. Stellaris

Similarity 56% Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities. Stellaris is a space, grand strategy and strategy game developed by Paradox Development Studio and published by Paradox Interactive. Released on May 09th 2016 has received 185,433 reviews of which 159,527 were positive and 25,906 were negative resulting in a rating of 8.5 out of 10. The game has hit the top spot as the #1 most played game like Planets Under Attack, thanks to its 13,555 peak concurrent players over the last day.
8.5
159,527
25,906

13,555
players

2. STAR WARS™ Empire at War - Gold Pack

Similarity 65% Command or corrupt an entire galaxy in the definitive Star Wars strategy collection. It is a time of galactic civil war. Will you take up the reins of the Rebellion, assume control of the Empire, or rule the Star Wars Underworld? STAR WARS™ Empire at War - Gold Pack is a strategy, rts and space game developed by Petroglyph and published by LucasArts, Lucasfilm and Disney. Released on May 25th 2010 has received 39,435 reviews of which 38,503 were positive and 932 were negative resulting in an impressive rating of 9.6 out of 10. While seeing 2,985 players online at once in the last 24 hours, this game is currently ranked #2 among games like Planets Under Attack based on player count.
9.6
38,503
932

2,985
players

3. FTL: Faster Than Light

Similarity 63% This "spaceship simulation roguelike-like" allows you to take your ship and crew on an adventure through a randomly generated galaxy filled with glory and bitter defeat. FTL: Faster Than Light is a rogue-like, space and strategy game developed and published by Subset Games. Released on September 14th 2012 has received 75,052 reviews of which 71,561 were positive and 3,491 were negative resulting in an impressive rating of 9.4 out of 10. While seeing 1,423 players online at once in the last 24 hours, this game is currently ranked #3 among games like Planets Under Attack based on player count.
9.4
71,561
3,491

1,423
players

4. Business Tour - Board Game with Online Multiplayer

Similarity 50% "Business Tour" is a free to play multiplayer tabletop game. Build your monopoly with friends. Complete daily tasks, compete against the other players and receive trade items rewards! Business Tour - Board Game with Online Multiplayer is a board game, free to play and multiplayer game developed by and published by 8floor. Released on July 27th 2017 has received 76,772 reviews of which 46,567 were positive and 30,205 were negative resulting in a rating of 6.0 out of 10. With 887 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Planets Under Attack.
6.0
46,567
30,205

887
players

5. Supreme Commander: Forged Alliance

Similarity 51% The last days of man are at hand.. Two years after the Infinite War the once great warring nations now lie in ruins, and humanity’s hope for a brighter future is nothing but a bitter memory. A new, seemingly unstoppable enemy, supported by the zealots of The Order, now seeks to eradicate mankind: UEF, Aeon Loyalist, and Cybran alike. Supreme Commander: Forged Alliance is a strategy, rts and sci-fi game developed by Gas Powered Games and published by Square Enix. Released on September 28th 2011 has received 13,468 reviews of which 13,042 were positive and 426 were negative resulting in an impressive rating of 9.4 out of 10. With 852 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Planets Under Attack.
9.4
13,042
426

852
players

6. Plague Inc: Evolved

Similarity 56% Plague Inc: Evolved is a unique mix of high strategy and terrifyingly realistic simulation. Your pathogen has just infected 'Patient Zero' - now you must bring about the end of human history by evolving a deadly, global Plague whilst adapting against everything humanity can do to defend itself. Plague Inc: Evolved is a strategy, simulation and outbreak sim game developed and published by Ndemic Creations. Released on February 18th 2016 has received 55,664 reviews of which 52,571 were positive and 3,093 were negative resulting in an impressive rating of 9.3 out of 10. With 778 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Planets Under Attack.
9.3
52,571
3,093

778
players

7. Sins of a Solar Empire II

Similarity 61% Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics. Sins of a Solar Empire II is a space, strategy and 4x game developed by Stardock Entertainment and Ironclad Games Corporation and published by Stardock Entertainment. Released on August 15th 2024 has received 6,946 reviews of which 5,949 were positive and 997 were negative resulting in a rating of 8.3 out of 10. With 658 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Planets Under Attack.
8.3
5,949
997

658
players

8. Cosmoteer: Starship Architect & Commander

Similarity 59% Design and simulate the starships of your dreams! Command your ship or fleet in epic battles and manage your crew while exploring a dangerous galaxy. Play alone or with friends, test your ships in online PvP, and let your imagination reach for the stars! Cosmoteer: Starship Architect & Commander is a sci-fi, singleplayer and 2d game developed and published by Walternate Realities. Released on October 24th 2022 has received 11,171 reviews of which 10,618 were positive and 553 were negative resulting in an impressive rating of 9.2 out of 10. With 482 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Planets Under Attack.
9.2
10,618
553

482
players

9. ENDLESS™ Space 2

Similarity 59% ENDLESS™ Space 2 is a Strategic Space Opera, featuring the compelling “just one more turn” gameplay, set in the mysterious ENDLESS™ Universe. As the leader of your civilization, will you impose your vision and build the greatest stellar empire? ENDLESS™ Space 2 is a strategy, space and sci-fi game developed by AMPLITUDE Studios and published by SEGA. Released on May 18th 2017 has received 22,190 reviews of which 18,526 were positive and 3,664 were negative resulting in a rating of 8.2 out of 10. With 473 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Planets Under Attack.
8.2
18,526
3,664

473
players

10. Terraforming Mars

Similarity 55% The taming of the Red Planet has begun! Corporations are competing to transform Mars into a habitable planet by spending vast resources and using innovative technology to raise temperature, create a breathable atmosphere, and make oceans of water. Terraforming Mars is a strategy, board game and space game developed by Artefacts Studio and published by Twin Sails Interactive. Released on October 17th 2018 has received 6,629 reviews of which 4,758 were positive and 1,871 were negative resulting in a rating of 7.0 out of 10. With 394 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Planets Under Attack.
7.0
4,758
1,871

394
players

Best deals on games like Planets Under Attack on Steam

Discover fantastic savings with the best discounts on a variety of games like Planets Under Attack available on Steam right now, updated on June 16th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Planets Under Attack.

1. EarthX

Similarity 63% EarthX is a rocket company management game. Go from launching small rockets on Earth to eventually building a colony on Mars. Create your own Internet constellation, develop new technologies, supply the International Space Station and terraform Mars! EarthX is a simulation, indie and strategy game developed by Denis and Ry and published by Mesote Games. Released on July 12th 2023 has received 875 reviews of which 769 were positive and 106 were negative resulting in a rating of 8.3 out of 10. Featuring a massive 99% discount, this game currently holds the #1 spot in the best deals for games like Planets Under Attack.
8.3
769
106

-99% 19.99€ 0.29€

2. Battlestar Galactica Deadlock

Similarity 56% In Battlestar Galactica Deadlock™ you’ll take command of the Colonial Fleet in defense of the Twelve Colonies during the First Cylon War. Lead many different types of ships in this 3D tactical game. Every decision counts, your strategy will be vital – can you ensure mankind’s survival? Battlestar Galactica Deadlock is a strategy, space and sci-fi game developed by Black Lab Games and published by Slitherine Ltd.. Released on August 31st 2017 has received 3,460 reviews of which 2,906 were positive and 554 were negative resulting in a rating of 8.1 out of 10. Thanks to its incredible 99% discount, this game is now the #2 best deal in games like Planets Under Attack.
8.1
2,906
554

-99% 38.99€ 0.48€

3. Interstellar Space: Genesis

Similarity 64% Interstellar Space: Genesis is a turn-based space 4X strategy game in which you attempt to build a thriving galactic empire. Discover mysteries among the stars, colonize worlds, and engage enemies in tactical turn-based combat on your journey to becoming the ruler of the galaxy! Interstellar Space: Genesis is a strategy, indie and 4x game developed and published by Praxis Games. Released on July 25th 2019 has received 772 reviews of which 648 were positive and 124 were negative resulting in a rating of 7.9 out of 10. Thanks to its incredible 99% discount, this game is now the #3 best deal in games like Planets Under Attack.
7.9
648
124

-99% 27.99€ 0.45€

4. Homeworld: Deserts of Kharak

Similarity 60% A ground-based RTS prequel to the classic Homeworld games. Assemble your fleet and lead them to victory on the shifting sands of Kharak in this compelling strategy game for PC from Blackbird Interactive. Homeworld: Deserts of Kharak is a strategy, rts and sci-fi game developed by Blackbird Interactive and published by Gearbox Publishing. Released on January 20th 2016 has received 8,519 reviews of which 6,789 were positive and 1,730 were negative resulting in a rating of 7.8 out of 10. Currently offered at a significant 99% discount, this title has earned the #4 position in the best deals for games like Planets Under Attack.
7.8
6,789
1,730

-99% 45.99€ 0.88€

5. Aven Colony

Similarity 52% Build a new home for humanity in Aven Colony. Discover Aven Prime - an alien planet of deserts, tundras, and wetlands light years from earth. Build your colonies into massive, sprawling cities whilst dealing with the challenges faced when settling on a new world. Aven Colony is a colony sim, city builder and strategy game developed by Mothership Entertainment LLC and published by Team17 Digital Ltd. Released on July 25th 2017 has received 2,638 reviews of which 1,921 were positive and 717 were negative resulting in a rating of 7.1 out of 10. Currently offered at a significant 99% discount, this title has earned the #5 position in the best deals for games like Planets Under Attack.
7.1
1,921
717

-99% 29.99€ 0.47€

6. HERO DEFENSE

Similarity 59% CREEPS CRUMBLE. HEROES RISE. Command a team of renegade heroes and impale, slash, tear and burn through legions of undead hell-bent on world domination. Your mission: to defeat the world’s most powerful vampire, Count Necrosis. HERO DEFENSE is a tower defense, strategy and indie game developed by Happy Tuesday and published by Headup. Released on May 31st 2016 has received 747 reviews of which 471 were positive and 276 were negative resulting in a rating of 6.1 out of 10. Currently offered at a significant 99% discount, this title has earned the #6 position in the best deals for games like Planets Under Attack.
6.1
471
276

-99% 29.99€ 0.56€

7. ReignMaker

Similarity 50% ReignMaker: Saving the World One Tower at a Time. ReignMaker is a match-3 game with tower defense, city building, and political strategy elements. Your policy decisions determine the fate of your city and the direction of the story. Your match-3 and tower defense skills determine the fate of the world. ReignMaker is a casual, strategy and indie game developed and published by Frogdice. Released on April 16th 2014 has received 410 reviews of which 260 were positive and 150 were negative resulting in a rating of 6.1 out of 10. Currently offered at a significant 99% discount, this title has earned the #7 position in the best deals for games like Planets Under Attack.
6.1
260
150

-99% 14.99€ 0.20€

8. BattleGroupVR

Similarity 52% BattleGroupVR is a first person real-time space strategy where you lead a fleet of powerful warships into battle from the bridge of your own flagship. Assemble your fleet, upgrade your load-outs, train your captains, engage the enemy and secure the sector. Try not to go down with the ship. BattleGroupVR is a space sim, space and vr game developed and published by SpaceOwl Games. Released on July 31st 2023 has received 902 reviews of which 834 were positive and 68 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 98% discount, this title has earned the #8 position in the best deals for games like Planets Under Attack.
8.7
834
68

-98% 20.99€ 0.42€

9. Fibbage XL

Similarity 55% NOTE: This game first appeared in The Jackbox Party Pack. It’s Fibbage XL – The Hilarious Bluffing Party Game in standalone form! Fool your friends with your lies, avoid theirs, and find the (usually outrageous) truth. “The mayor of Rabbit Hash, Kentucky is a ____.” Baby? Rabbit? Ham sandwich? Go! Fibbage XL is a strategy, casual and indie game developed and published by Jackbox Games and Inc.. Released on March 24th 2016 has received 318 reviews of which 301 were positive and 17 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 98% discount, this title has earned the #9 position in the best deals for games like Planets Under Attack.
8.7
301
17

-98% 9.99€ 0.22€

10. DG2: Defense Grid 2

Similarity 77% Setting the bar as the definitive tower defense game, Defense Grid 2 introduces new worlds and threats to test your tower placement strategies. With a bold new look and the addition of new game modes, player-versus-player and multiplayer co-op, every play brings fun new opportunities and challenges. DG2: Defense Grid 2 is a strategy, tower defense and indie game developed by Hidden Path Entertainment and published by Hidden Path Entertainment and 505 Games. Released on September 23rd 2014 has received 3,163 reviews of which 2,723 were positive and 440 were negative resulting in a rating of 8.3 out of 10. Currently offered at a significant 98% discount, this title has earned the #10 position in the best deals for games like Planets Under Attack.
8.3
2,723
440

-98% 12.49€ 0.26€

Free games like Planets Under Attack on Steam

Check out this fantastic list of free-to-play games like Planets Under Attack you can enjoy on Steam right now, updated on June 16th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like Planets Under Attack.

1. Business Tour - Board Game with Online Multiplayer

Similarity 50% "Business Tour" is a free to play multiplayer tabletop game. Build your monopoly with friends. Complete daily tasks, compete against the other players and receive trade items rewards! Business Tour - Board Game with Online Multiplayer is a board game, free to play and multiplayer game developed by and published by 8floor. Released on July 27th 2017 has received 76,772 reviews of which 46,567 were positive and 30,205 were negative resulting in a rating of 6.0 out of 10. With 887 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Planets Under Attack.
6.0
46,567
30,205

887
players

2. Star Trek Timelines

Similarity 53% Explore the Final Frontier in the ultimate sci-fi strategy RPG, Star Trek Timelines! Join Starfleet and overcome challenges as you boldly go where no game has gone before – across the entire history of Star Trek. Star Trek Timelines is a free to play, strategy and space game developed and published by Tilting Point. Released on July 12th 2017 has received 1,430 reviews of which 938 were positive and 492 were negative resulting in a rating of 6.4 out of 10. Thanks to its free to play tag and a daily player base of 148, this game has secured the #2 spot in the ranking of free games like Planets Under Attack.
6.4
938
492

148
players

3. Talisman: Digital Classic Edition

Similarity 53% The officially licensed multiplayer version of the classic fantasy adventure board game, Talisman, based on the 4th Edition of the game. On your travels, you will need strength, courage and some good dice rolls to survive the dangers you face and beat your opponents to the centre of the board! Talisman: Digital Classic Edition is a board game, tabletop and strategy game developed and published by Nomad Games. Released on February 25th 2014 has received 9,661 reviews of which 7,569 were positive and 2,092 were negative resulting in a rating of 7.7 out of 10. Thanks to its free to play tag and a daily player base of 118, this game has secured the #3 spot in the ranking of free games like Planets Under Attack.
7.7
7,569
2,092

118
players

4. Pixel Starships

Similarity 53% Pixel Starships is an FTL-style online sci-fi strategy builder and management game with a competitive PVP tournament. Set in the retro galaxy, your role is to explore space, meet aliens, and develop your ship, crew and AI. The game contains deep strategic and 4x elements. PSS is community-driven. Pixel Starships is a sci-fi, space and strategy game developed and published by SavySoda. Released on May 23rd 2023 has received 2,732 reviews of which 2,008 were positive and 724 were negative resulting in a rating of 7.1 out of 10. Attracting a solid base of 117 players due to its free access, this strategy game has achieved the #4 position in the best free games like Planets Under Attack.
7.1
2,008
724

117
players

5. Hades' Star

Similarity 60% A unique space strategy game where thousands of players participate in one shared galaxy. Hades' Star is a free to play, space and strategy game developed and published by Parallel Space Inc. Released on February 27th 2019 has received 2,577 reviews of which 1,874 were positive and 703 were negative resulting in a rating of 7.1 out of 10. Attracting a solid base of 104 players due to its free access, this strategy game has achieved the #5 position in the best free games like Planets Under Attack.
7.1
1,874
703

104
players

6. Zero-K

Similarity 60% With 100+ truly unique units, Zero-K is an RTS of freedom and creativity, tempered by a decade of refinement. Sculpt land into a castle and throw invaders off it with a Jugglenaut. Explore a massive campaign, solo or co-op. Hop online for epic 32 player battles or fast paced 1v1, on 100s of maps. Zero-K is a strategy, free to play and rts game developed and published by Zero-K Team. Released on April 27th 2018 has received 3,922 reviews of which 3,678 were positive and 244 were negative resulting in an impressive rating of 9.0 out of 10. The game currently holds the #6 spot among the most played free games like Planets Under Attack.
9.0
3,678
244

93
players

7. My Lands: Black Gem Hunting

Similarity 56% My Lands is a free online RTS where dark and light forces fight for Black Gem and dominion in a vast fantasy world. Cooperation between players, joint economy development, creation of clans and alliances and elaboration of a team strategy serve as the very foundation of the game. My Lands: Black Gem Hunting is a strategy, free to play and rts game developed by Gravvit Ltd and Forbes Consult Ltd and published by ELYLAND INVESTMENT COMPANY Ltd. Released on September 16th 2014 has received 3,306 reviews of which 2,766 were positive and 540 were negative resulting in a rating of 8.1 out of 10. The game currently holds the #7 spot among the most played free games like Planets Under Attack.
8.1
2,766
540

51
players

8. Emporea: Realms of War and Magic

Similarity 50% Emporea is an oldschool fantasy strategy game, where cooperation with other players is necessary to achieve victory. Only the best alliance can win! Multiple realms available, with new ones starting every two weeks. Emporea: Realms of War and Magic is a free to play, strategy and massively multiplayer game developed and published by Pixel Federation. Released on June 08th 2016 has received 526 reviews of which 359 were positive and 167 were negative resulting in a rating of 6.6 out of 10. The game currently holds the #8 spot among the most played free games like Planets Under Attack.
6.6
359
167

31
players

9. AirMech

Similarity 53% AirMech® Strike is a fast paced Action-RTS game that can be played solo, coop, or competitively online. Earn Kudos and Experience in battle and unlock a wide collection of AirMechs and Units while you practice the perfect strategy to emerge victorious! AirMech is a free to play, strategy and multiplayer game developed and published by Carbon Games. Released on March 30th 2018 has received 10,679 reviews of which 8,984 were positive and 1,695 were negative resulting in a rating of 8.2 out of 10. The game currently holds the #9 spot among the most played free games like Planets Under Attack.
8.2
8,984
1,695

28
players

10. Planet S

Similarity 71% Planet S is a real-time strategy game where your goal is to colonize multiple planets in a solar system to advance your civilization, build a city and supply it to grow your faction. Planet S is a strategy, city builder and multiplayer game developed and published by Glimmerlight Games. Released on October 28th 2023 has received 2,603 reviews of which 2,387 were positive and 216 were negative resulting in a rating of 8.8 out of 10. The game currently holds the #10 spot among the most played free games like Planets Under Attack.
8.8
2,387
216

17
players