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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Rebel Galaxy
Rebel Galaxy is a swashbuckling space adventure, with action-packed combat, exploration, discovery, trade, and “negotiation” with the outlandish denizens at the edge of the known universe.
House of the Dying Sun
House of the Dying Sun is a tactical space shooter that puts you in the cockpit of the universe's most terrifying starfighter. Hunt the enemies of the Empire and bring ruin to their people.
Homeworld: Deserts of Kharak
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.
Space Run
Space Run is a «real-time spaceship construction strategy game». Space Run takes the well-known Tower Defense-style gameplay and twists it, challenging you to manage and protect a spaceship and its cargo against the hazards of deep space!
The Last Federation
From the creators of AI War: Fleet Command comes an all-new grand strategy title with turn-based tactical combat, set in a deep simulation of an entire solar system and its billions of inhabitants. You are the last of a murdered race, determined to unify or destroy the 8 others.
Space Farmers
Grab a friend, grab a gadget, grab a gun and get ready for the most fun you'll ever have in a co-op game!
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.
Beware Planet Earth
Beware Planet Earth! is a beguiling mix of classic tower defense and time management coming to PC via Steam for the first time. Save your cows from the Martian invasion by building an effective defense using towers, traps and objects, and also by firing your Zapper directly at the invading force of little green men!
Space Pirates And Zombies 2
Design and then improve the ultimate mothership. Explore a persistent living galaxy populated by 200 unique captains that can do everything you can do. Survive the zombie infection and then fight them back. Make allies and start your own faction. Build your empire. Also includes Sandbox Mode.
Homeworld Remastered Collection
Experience the epic space strategy games that redefined the RTS genre. Control your fleet and build an armada across more than 30 single-player missions. Choose unit types, fleet formations and flight tactics for each strategic situation.
Startopia
A once thriving network of space stations and planets have been left lifeless, redundant scars of the apocalypse. Into this age of darkness comes light. You will lead the way in rebuilding the network of space stations to a standard accepted by the individual alien races, attracting them to harness their expertise and research new...
Q.U.B.E: Director's Cut
Q.U.B.E: Director's Cut is the definitive version of the brain-twisting first-person puzzler. Using special high-tech gloves to manipulate cubes in the environment, the player solves an array of conundrums - from physics-based challenges; to 3D jigsaws; to platform-based trials.
Weird Worlds: Return to Infinite Space
Weird Worlds: Return to Infinite Space is a hybrid roguelike game of space exploration, adventure and starship combat.
Kerbal Space Program
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
FTL: Faster Than Light
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.
Sins of a Solar Empire®: Rebellion
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.
Space Pirates and Zombies
Explore a randomly generated Galaxy populated with factions, enemies, missions, and items providing you with a unique experience each time you play.
Alien Hallway
Players measure stamina with a never-ending stream of green creatures within the borders of a special military mission.
SpaceChem
Zachtronics is back with an ambitious new design-based puzzle game. Take on the role of a Reactor Engineer working for SpaceChem, the leading chemical synthesizer for frontier colonies. Construct elaborate factories to transform raw materials into valuable chemical products!
Supreme Commander 2
Includes 47 Steam achievements, leaderboards, and stats!
STAR WARS™ Empire at War - Gold Pack
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?
Osmos
Enter the ambient world of Osmos: elegant, physics-based gameplay, dreamlike visuals, and a minimalist, electronic soundtrack. Your objective is to grow by absorbing other motes. Propel yourself by ejecting matter behind you. But be wise: ejecting matter also shrinks you. Relax - good things come to those who wait.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 April 30th 2025.
1. RimWorld
Similarity 79% A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more. RimWorld is a colony sim, base-building and survival game developed and published by Ludeon Studios. Released on October 17th 2018 has received 208,163 reviews of which 203,940 were positive and 4,223 were negative resulting in an impressive rating of 9.7 out of 10. The game has hit the top spot as the #1 most played game like Planets Under Attack, thanks to its 18,188 peak concurrent players over the last day.
9.7
203,940
4,223
18,188
players
2. Satisfactory
Similarity 75% Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven! Satisfactory is a base-building, automation and open world game developed by Coffee Stain Studios and published by Coffee Stain Publishing. Released on September 10th 2024 has received 229,040 reviews of which 222,475 were positive and 6,565 were negative resulting in an impressive rating of 9.6 out of 10. While seeing 12,693 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
222,475
6,565
12,693
players
3. Space Engineers
Similarity 93% Space Engineers is a sandbox game about engineering, construction, exploration and survival in space and on planets. Players build space ships, space stations, planetary outposts of various sizes and uses, pilot ships and travel through space to explore planets and gather resources to survive. Space Engineers is a space, sandbox and building game developed and published by Keen Software House. Released on February 28th 2019 has received 131,878 reviews of which 116,777 were positive and 15,101 were negative resulting in a rating of 8.7 out of 10. While seeing 4,402 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.
8.7
116,777
15,101
4,402
players
4. Oxygen Not Included
Similarity 93% Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive. Oxygen Not Included is a colony sim, base-building and survival game developed and published by Klei Entertainment. Released on July 30th 2019 has received 127,555 reviews of which 123,406 were positive and 4,149 were negative resulting in an impressive rating of 9.5 out of 10. With 4,349 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Planets Under Attack.
9.5
123,406
4,149
4,349
players
5. Kerbal Space Program
Similarity 79% In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics. Kerbal Space Program is a space, simulation and sandbox game developed by Squad and published by Private Division. Released on April 27th 2015 has received 126,522 reviews of which 120,440 were positive and 6,082 were negative resulting in an impressive rating of 9.4 out of 10. With 1,958 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
120,440
6,082
1,958
players
6. STAR WARS™ Empire at War - Gold Pack
Similarity 79% 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 38,906 reviews of which 37,985 were positive and 921 were negative resulting in an impressive rating of 9.6 out of 10. With 1,923 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Planets Under Attack.
9.6
37,985
921
1,923
players
7. Dyson Sphere Program
Similarity 86% Build the most efficient intergalactic factory in space simulation strategy game Dyson Sphere Program! Harness the power of stars, collect resources, plan and design production lines and develop your interstellar factory from a small space workshop to a galaxy-wide industrial empire. Dyson Sphere Program is a automation, space and base-building game developed by Youthcat Studio and published by Gamirror Games. Released on January 20th 2021 has received 84,667 reviews of which 82,683 were positive and 1,984 were negative resulting in an impressive rating of 9.6 out of 10. With 1,702 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Planets Under Attack.
9.6
82,683
1,984
1,702
players
8. FTL: Faster Than Light
Similarity 79% 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 74,588 reviews of which 71,155 were positive and 3,433 were negative resulting in an impressive rating of 9.4 out of 10. With 1,186 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Planets Under Attack.
9.4
71,155
3,433
1,186
players
9. Sins of a Solar Empire II
Similarity 79% 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 6,741 reviews of which 5,790 were positive and 951 were negative resulting in a rating of 8.3 out of 10. With 766 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Planets Under Attack.
8.3
5,790
951
766
players
10. Supreme Commander: Forged Alliance
Similarity 79% 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 13,403 reviews of which 12,982 were positive and 421 were negative resulting in an impressive rating of 9.4 out of 10. With 706 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Planets Under Attack.
9.4
12,982
421
706
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 April 30th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Planets Under Attack.
1. Homeworld: Deserts of Kharak
Similarity 79% 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 8,484 reviews of which 6,772 were positive and 1,712 were negative resulting in a rating of 7.8 out of 10. Featuring a massive 95% discount, this game currently holds the #1 spot in the best deals for games like Planets Under Attack.
7.8
6,772
1,712
-95%
45.00€
2.25€
2. Tin Can
Similarity 79% You've barely managed to escape your exploding spaceship. Now in an old escape pod, you hurtle through space at the mercy of the cosmos. With no knowledge of the pod’s complex systems, your life depends on a technical manual and your own wits. How long can you survive? Tin Can is a simulation, space and survival game developed by Tin Can Studio and published by Tin Can Studio and IndieArk. Released on May 12th 2022 has received 1,181 reviews of which 1,000 were positive and 181 were negative resulting in a rating of 8.1 out of 10. Thanks to its incredible 94% discount, this game is now the #2 best deal in games like Planets Under Attack.
8.1
1,000
181
-94%
16.67€
1.00€
3. Distant Worlds: Universe
Similarity 86% Distant Worlds is a vast, pausable real-time 4X space strategy game. Experience the full depth and detail of turn-based strategy, but with the simplicity and ease of real-time, and on the scale of a massively-multiplayer online game. Distant Worlds: Universe is a strategy, 4x and space game developed by Code Force and published by Slitherine Ltd.. Released on May 23rd 2014 has received 1,816 reviews of which 1,376 were positive and 440 were negative resulting in a rating of 7.3 out of 10. Thanks to its incredible 92% discount, this game is now the #3 best deal in games like Planets Under Attack.
7.3
1,376
440
-92%
28.00€
2.24€
4. VoidExpanse
Similarity 93% Explore the vast reaches of VoidExpanse -- mine asteroids, upgrade your ship, trade, complete missions, advance your character and survive fast-paced combat with hostile aliens and mercenaries in the rich and exciting Sci-Fi universe of VoidExpanse! VoidExpanse is a space, rpg and open world game developed and published by AtomicTorch Studio. Released on April 02nd 2015 has received 748 reviews of which 534 were positive and 214 were negative resulting in a rating of 6.9 out of 10. Currently offered at a significant 91% discount, this title has earned the #4 position in the best deals for games like Planets Under Attack.
6.9
534
214
-91%
15.11€
1.36€
5. Battlezone: Combat Commander
Similarity 79% Battlezone: Combat Commander remasters FPS-RTS classic Battlezone II with slick new visuals, brand new achievements, Steam Workshop support and much more! The solar system is at war. Take command. Battlezone: Combat Commander is a strategy, action and rts game developed by Big Boat Interactive and published by Rebellion. Released on March 01st 2018 has received 872 reviews of which 784 were positive and 88 were negative resulting in a rating of 8.5 out of 10. Currently offered at a significant 90% discount, this title has earned the #5 position in the best deals for games like Planets Under Attack.
8.5
784
88
-90%
20.60€
2.06€
6. I am not a Monster: First Contact
Similarity 93% Retro sci-fi tactical turn-based strategy with an exciting storyline. The Albatross space liner is overrun by lizard-like monsters that can infect humans and turn them into their own kind. Save the passengers and defeat the hostile creatures. I am not a Monster: First Contact is a turn-based tactics, strategy and sci-fi game developed by Cheerdealers and published by Alawar. Released on September 27th 2018 has received 1,255 reviews of which 965 were positive and 290 were negative resulting in a rating of 7.4 out of 10. Currently offered at a significant 90% discount, this title has earned the #6 position in the best deals for games like Planets Under Attack.
7.4
965
290
-90%
10.79€
1.07€
7. Space Run Galaxy
Similarity 75% Space Run Galaxy is the sequel to Space Run, the game from one-man studio Passtech, which seduced hundreds of thousands of players with its dynamic and original gameplay. By twisting the tower-defense game style, Space Run offered an addictive real-time spaceship construction strategy experience. Space Run Galaxy is a strategy, indie and tower defense game developed by Passtech Games and published by Focus Entertainment. Released on June 17th 2016 has received 993 reviews of which 635 were positive and 358 were negative resulting in a rating of 6.2 out of 10. Currently offered at a significant 90% discount, this title has earned the #7 position in the best deals for games like Planets Under Attack.
6.2
635
358
-90%
10.00€
1.00€
8. Battlezone 98 Redux
Similarity 79% One of the greatest sci-fi strategy games of all time returns with remastered visuals, online multiplayer and near unlimited mod content from Steam Workshop. Experience thrilling first person action and acclaimed RTS in this explosive alternate vision of the 1960s space race. Battlezone 98 Redux is a strategy, action and first-person game developed by Big Boat Interactive and published by Rebellion. Released on April 18th 2016 has received 1,054 reviews of which 966 were positive and 88 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 89% discount, this title has earned the #8 position in the best deals for games like Planets Under Attack.
8.7
966
88
-89%
20.00€
2.20€
9. Space Crew: Legendary Edition
Similarity 79% Time for your toughest mission yet! Recruit and train your crew to tackle the growing threat from alien and android armies as you defend Earth to become a Galactic Legend in Space Crew: Legendary Edition. All new content free to existing owners of Space Crew! Space Crew: Legendary Edition is a action, sci-fi and adventure game developed by Runner Duck and published by Curve Games. Released on October 15th 2020 has received 2,845 reviews of which 2,145 were positive and 700 were negative resulting in a rating of 7.3 out of 10. Currently offered at a significant 85% discount, this title has earned the #9 position in the best deals for games like Planets Under Attack.
7.3
2,145
700
-85%
15.99€
2.39€
10. Drone Swarm
Similarity 86% Drone Swarm is a very unique take on tactical games. Control 32,000 drones in quick, fast-paced fights. Combine your swarm abilities and counter constantly evolving attacks of your opponents. Survive varying enemy waves, get upgrades to your swarm, and make it to the next system alive! Drone Swarm is a sci-fi, action and real time tactics game developed by stillalive studios and published by astragon Entertainment. Released on October 20th 2020 has received 320 reviews of which 202 were positive and 118 were negative resulting in a rating of 6.1 out of 10. Currently offered at a significant 83% discount, this title has earned the #10 position in the best deals for games like Planets Under Attack.
6.1
202
118
-83%
17.47€
2.97€
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 April 30th 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. Endless Sky
Similarity 79% Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters. Endless Sky is a space, free to play and open world game developed and published by Michael Zahniser. Released on October 30th 2015 has received 6,604 reviews of which 6,096 were positive and 508 were negative resulting in a rating of 8.9 out of 10. With 129 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Planets Under Attack.
8.9
6,096
508
129
players
2. Hades' Star
Similarity 96% 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 2,561 reviews of which 1,864 were positive and 697 were negative resulting in a rating of 7.1 out of 10. Thanks to its free to play tag and a daily player base of 108, this game has secured the #2 spot in the ranking of free games like Planets Under Attack.
7.1
1,864
697
108
players
3. Awesomenauts - the 2D moba
Similarity 89% Use your power, show your might! Play this Multiplayer Online Battle Arena (MOBA) game for FREE now! AWESOMENAUTS combines 2D platforming with team-based strategy and hero based action. Whether you are a new recruit or an intergalactic legend, play AWESOMENAUTS! Awesomenauts - the 2D moba is a moba, multiplayer and 2d game developed by Ronimo Games and published by Atari. Released on August 01st 2012 has received 26,719 reviews of which 22,609 were positive and 4,110 were negative resulting in a rating of 8.3 out of 10. The game currently holds the #3 spot among the most played free games like Planets Under Attack.
8.3
22,609
4,110
90
players
4. Zero-K
Similarity 82% 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 3,885 reviews of which 3,639 were positive and 246 were negative resulting in an impressive rating of 9 out of 10. The game currently holds the #4 spot among the most played free games like Planets Under Attack.
9
3,639
246
86
players
5. Star Realms
Similarity 93% Star Realms is a hugely popular space combat deckbuilding game. Download and play today (note: base set is required to play online) to find out why Star Realms is the winner of SXSW 2014 Board Game of the Year, 7 Golden Geek Awards from BoardGameGeek, and 2 Dice Tower awards! Star Realms is a deckbuilding, strategy and card battler game developed and published by Wise Wizard Games and LLC. Released on March 08th 2016 has received 2,048 reviews of which 1,775 were positive and 273 were negative resulting in a rating of 8.3 out of 10. The game currently holds the #5 spot among the most played free games like Planets Under Attack.
8.3
1,775
273
65
players
6. TOXIKK™
Similarity 75% FRAG LIKE IT'S 1999! TOXIKK plays as if today's military shooters never existed: Designed as a spiritual successor to the FPS giants of the late 90s and early 2ks, TOXIKK carefully evolves their mechanics with modern technology and fresh ideas elaborated with Arena-FPS enthusiasts. TOXIKK™ is a fps, action and free to play game developed by Reakktor Studios and published by Schwiezer System GmbH. Released on September 10th 2016 has received 5,795 reviews of which 4,472 were positive and 1,323 were negative resulting in a rating of 7.5 out of 10. The game currently holds the #6 spot among the most played free games like Planets Under Attack.
7.5
4,472
1,323
61
players
7. AirMech
Similarity 82% 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 10,655 reviews of which 8,961 were positive and 1,694 were negative resulting in a rating of 8.2 out of 10. The game currently holds the #7 spot among the most played free games like Planets Under Attack.
8.2
8,961
1,694
35
players
8. Art of War: Red Tides
Similarity 82% Art of War: Red Tides is a fair multiplayer strategy game that allows different teams on the same platform (e.g. smartphones, PC, etc.) to battle against each other. You will encounter players around the world! Art of War: Red Tides is a free to play, strategy and multiplayer game developed and published by Game Science. Released on December 22nd 2016 has received 6,897 reviews of which 5,440 were positive and 1,457 were negative resulting in a rating of 7.7 out of 10. The game currently holds the #8 spot among the most played free games like Planets Under Attack.
7.7
5,440
1,457
13
players
9. Prismata
Similarity 75% A perfect-information strategy game inspired by RTS, deckbuilders, and board games. Choose from three distinct technology classes and outwit your foes by snowballing your starting resources into a powerful cybernetic army. ABSOLUTELY NO PAY-TO-WIN. Prismata is a early access, strategy and indie game developed and published by Lunarch Studios. Released on March 08th 2018 has received 1,185 reviews of which 968 were positive and 217 were negative resulting in a rating of 7.8 out of 10. The game currently holds the #9 spot among the most played free games like Planets Under Attack.
7.8
968
217
12
players
10. Planet S
Similarity 99% 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 2,579 reviews of which 2,364 were positive and 215 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
2,364
215
9
players