Games like Iron Marines on Steam

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

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Cosmoteer: Starship Architect & Commander 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!

Similarity 64%
Price 18.99€
Rating 9.2
Release 24 Oct 2022
Supreme Commander 2 Includes 47 Steam achievements, leaderboards, and stats!

Similarity 63%
Price -76% 3.17€
Rating 8.6
Release 01 Mar 2010
Starship Troopers: Terran Command Lead the Mobile Infantry in this RTS game set in the Starship Troopers film universe. Balance your army composition with a diverse set of unit types, overcome line-of-sight and line-of-fire challenges through tactical positioning, and use special abilities to smash the Arachnid hordes!

Similarity 63%
Price -99% 0.46€
Rating 8.5
Release 16 Jun 2022
Revenge of the Titans The ultimate mash-up of Real-time Strategy and Tower Defense!

Similarity 63%
Price 16.79€
Rating 7.8
Release 16 Mar 2011
Supreme Commander For a thousand years, three opposing forces have waged war for what they believe is true. There can be no room for compromise: their way is the only way. Dubbed The Infinite War, this devastating conflict has taken its toll on a once-peaceful galaxy and has only served to deepen the hatred between the factions.

Similarity 63%
Price -75% 2.50€
Rating 8.6
Release 28 Sep 2011
Anomaly Korea Exclusively brought to Steam for PC, Mac and Linux in Anomaly Bundle, Anomaly Korea is an expansion campaign to Anomaly Warzone Earth. The alien robots are back and this time they’ve got Korea in their sights. It’s your job to lead a squad into fierce fire-fights and fend off the alien invasion.

Similarity 63%
Price -86% 0.69€
Rating 7.5
Release 06 Nov 2013
2112TD: Tower Defense Survival Get ready for the ULTIMATE tower defense onslaught. Build, deploy, research and upgrade your defenses in this epic, old school RTS inspired sci-fi adventure.

Similarity 62%
Price 4.69€
Rating 8.2
Release 19 Jan 2023
Star Ruler Take command of a vast interstellar empire and safeguard your species from total extinction in a procedurally generated 3D galaxy (with the option to flatten it) from 1 System to 10,000+! Prove your species' ingenuity through a deep and intricate combat system where anything (from individual components on ships to the stars themselves)...

Similarity 62%
Price -94% 0.42€
Rating 7.7
Release 20 Sep 2010
Joint Task Force Joint Task Force is the real-time strategy (RTS) game where you command the frontline forces in tomorrow's most hazardous conflicts. Lead twenty dramatic missions in explosive war-zones including the Middle East, Central Asia, and the Balkans.

Similarity 62%
Price 6.59€
Rating 8.1
Release 27 Mar 2007
Supreme Commander: Forged Alliance 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.

Similarity 62%
Price -69% 3.11€
Rating 9.4
Release 28 Sep 2011
Creeper World 3: Arc Eternal Creeper World 3 is what happens when cellular automata takes over a strategy simulation. Instead of discrete units that attack your base, a fluid-like substance spreads over the terraformable terrain. Your base, your weapons, your strategy... you must adapt them all.

Similarity 62%
Price -23% 11.56€
Rating 9.3
Release 27 Mar 2014
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.

Similarity 62%
Price -89% 1.19€
Rating 8.7
Release 15 Aug 2011
Halo: Spartan Strike Halo: Spartan Strike makes you a Spartan supersoldier battling evil forces. Delve into 30 challenging missions through cities and jungles using a devastating arsenal of weapons, abilities and vehicles including the iconic Warthog against the Covenant and Promethean enemies. *DirectX feature level 10 required*

Similarity 61%
Price 2.99€
Rating 7.7
Release 16 Apr 2015
Defense Grid: The Awakening Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.

Similarity 61%
Price 7.99€
Rating 9.3
Release 08 Dec 2008
Particle Fleet: Emergence Build and design your own fleets and stand opposed to the Particulate in this physics/strategy/RTS/fleet hybrid. Build partially destructible and self repairing ships that interact with enemies less controlled by some scripted logic and more driven by a real time massive physics particle simulation.

Similarity 61%
Price 14.99€
Rating 8.8
Release 29 Sep 2016
Halo Wars: Definitive Edition Halo Wars: Definitive Edition is an enhanced version of the real-time strategy classic, Halo Wars, updated to run natively on PC. Halo Wars: Definitive Edition includes improved graphics, new achievements and all of the DLC created for the landmark real-time strategy game.

Similarity 61%
Price 19.99€
Rating 8.8
Release 20 Apr 2017
Executive Assault Executive Assault is an indie real-time strategy/first-person shooter where you can not only build your base and create armies, but also take control of your units and fight as one of them.

Similarity 61%
Price 10.79€
Rating 8.1
Release 17 Jul 2015
Sins of a Solar Empire II 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.

Similarity 61%
Price -74% 13.06€
Rating 8.3
Release 15 Aug 2024
Eufloria HD Experience “Eufloria HD”, the new edition of Eufloria, an incredibly addictive ambient strategy game that anyone can play! Explore a beautifully realized universe rendered in a style that is unique and compelling.

Similarity 61%
Price -75% 3.77€
Rating 8.4
Release 14 Oct 2014
Act of War: High Treason The highly anticipated sequel to the critically acclaimed game Act of War: Direct Action picks up where the techno-thriller left off. On the eve of the U.S. Presidential elections, simultaneous terrorist attacks hit both candidates. Clues point to corrupt elements within the U.S.

Similarity 61%
Price -68% 0.96€
Rating 7.7
Release 12 Mar 2008
Dune: Spice Wars A 4X real-time strategy game from the developers of the critically acclaimed Northgard. Set in Frank Herbert’s groundbreaking Dune universe, you must lead your faction and battle for control and dominance over the harsh desert planet of Arrakis.

Similarity 60%
Price -70% 10.52€
Rating 7.8
Release 14 Sep 2023
Taur Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the homeworld of the Tauron droids against a relentless invasion. Will your Taur stand against the Imperion warmachine?

Similarity 60%
Price -40% 12.59€
Rating 7.7
Release 19 Feb 2020
Anomaly Warzone Earth Mobile Campaign Anomaly Warzone Earth Mobile Campaign continues Steam's Anomaly Warzone Earth in an extra 15-level campaign. Originally released on mobile devices, the campaign is brought to Steam for PC, Mac and Linux exclusively in Anomaly Bundle. AWE Mobile Campaign turns tower defense on its head.

Similarity 60%
Price -86% 0.69€
Rating 7.5
Release 06 Nov 2013
Hyper Knights Slash and Dash, raise your army, learn powerful combos and take back your land!

Similarity 60%
Price 4.99€
Rating 8.4
Release 19 May 2017

Most played games like Iron Marines on Steam

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

1. STAR WARS™ Empire at War - Gold Pack

Similarity 70% 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. The game has hit the top spot as the #1 most played game like Iron Marines, thanks to its 2,985 peak concurrent players over the last day.
9.6
38,503
932

2,985
players

2. STAR WARS Jedi: Survivor™

Similarity 48% The story of Cal Kestis continues in STAR WARS Jedi: Survivor™, a galaxy-spanning, third-person, action-adventure game. STAR WARS Jedi: Survivor™ is a action, adventure and souls-like game developed by Respawn and published by Electronic Arts. Released on April 27th 2023 has received 67,054 reviews of which 46,131 were positive and 20,923 were negative resulting in a rating of 6.8 out of 10. While seeing 2,620 players online at once in the last 24 hours, this game is currently ranked #2 among games like Iron Marines based on player count.
6.8
46,131
20,923

2,620
players

3. FTL: Faster Than Light

Similarity 53% 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 Iron Marines based on player count.
9.4
71,561
3,491

1,423
players

4. Star Wars Outlaws

Similarity 47% Experience the first-ever open world Star Wars™ game and explore distinct locations across the galaxy, both iconic and new. Risk it all as scoundrel Kay Vess, seeking freedom and the means to start a new life. Star Wars Outlaws is a singleplayer, open world and action game developed by Massive Entertainment – A Ubisoft Studio and published by Ubisoft. Released on November 21st 2024 has received 4,792 reviews of which 3,549 were positive and 1,243 were negative resulting in a rating of 7.2 out of 10. With 1,333 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Iron Marines.
7.2
3,549
1,243

1,333
players

5. Company of Heroes

Similarity 51% Delivering a visceral WWII gaming experience, Company of Heroes redefines RTS by bringing the sacrifice of heroic soldiers, war-ravaged environments, and dynamic battlefields to life. Please visit the "Company of Heroes - Legacy Edition" page for additional user reviews. Company of Heroes is a strategy, world war ii and rts game developed by Relic Entertainment and published by SEGA. Released on September 11th 2006 has received 16,971 reviews of which 16,025 were positive and 946 were negative resulting in an impressive rating of 9.2 out of 10. With 858 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Iron Marines.
9.2
16,025
946

858
players

6. Supreme Commander: Forged Alliance

Similarity 62% 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 #6 spot among the most played games like Iron Marines.
9.4
13,042
426

852
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 Iron Marines.
8.3
5,949
997

658
players

8. Cosmoteer: Starship Architect & Commander

Similarity 64% 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 Iron Marines.
9.2
10,618
553

482
players

9. Tempest Rising

Similarity 55% Command distinct factions in a desperate struggle for power and resources in Tempest Rising - a classic RTS set on Earth after a nuclear war. Tempest Rising is a rts, strategy and base-building game developed by Slipgate Ironworks™ and published by 3D Realms and Knights Peak. Released on April 24th 2025 has received 7,043 reviews of which 6,276 were positive and 767 were negative resulting in a rating of 8.6 out of 10. With 482 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Iron Marines.
8.6
6,276
767

482
players

10. ENDLESS™ Space 2

Similarity 50% 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 #10 spot among the most played games like Iron Marines.
8.2
18,526
3,664

473
players

Best deals on games like Iron Marines on Steam

Discover fantastic savings with the best discounts on a variety of games like Iron Marines 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 Iron Marines.

1. Starship Troopers: Terran Command

Similarity 63% Lead the Mobile Infantry in this RTS game set in the Starship Troopers film universe. Balance your army composition with a diverse set of unit types, overcome line-of-sight and line-of-fire challenges through tactical positioning, and use special abilities to smash the Arachnid hordes! Starship Troopers: Terran Command is a strategy, rts and singleplayer game developed by The Artistocrats and published by Slitherine Ltd.. Released on June 16th 2022 has received 10,784 reviews of which 9,461 were positive and 1,323 were negative resulting in a rating of 8.5 out of 10. Featuring a massive 99% discount, this game currently holds the #1 spot in the best deals for games like Iron Marines.
8.5
9,461
1,323

-99% 28.99€ 0.46€

2. Battlestar Galactica Deadlock

Similarity 48% 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 Iron Marines.
8.1
2,906
554

-99% 38.99€ 0.48€

3. Interstellar Space: Genesis

Similarity 52% 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 Iron Marines.
7.9
648
124

-99% 27.99€ 0.45€

4. Homeworld: Deserts of Kharak

Similarity 64% 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 Iron Marines.
7.8
6,789
1,730

-99% 45.99€ 0.88€

5. X-Morph: Defense

Similarity 48% Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle. X-Morph: Defense is a tower defense, strategy and action game developed by and published by Exor Studios. Released on August 30th 2017 has received 3,823 reviews of which 3,506 were positive and 317 were negative resulting in a rating of 8.8 out of 10. Currently offered at a significant 98% discount, this title has earned the #5 position in the best deals for games like Iron Marines.
8.8
3,506
317

-98% 19.99€ 0.54€

6. Battlezone 98 Redux

Similarity 56% 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 1,064 reviews of which 975 were positive and 89 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 98% discount, this title has earned the #6 position in the best deals for games like Iron Marines.
8.7
975
89

-98% 19.99€ 0.58€

7. DG2: Defense Grid 2

Similarity 54% 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 #7 position in the best deals for games like Iron Marines.
8.3
2,723
440

-98% 12.49€ 0.26€

8. Q.U.B.E. 2

Similarity 48% Q.U.B.E. 2 is the sequel to the hit first-person puzzle game Q.U.B.E. You are Amelia Cross, a stranded archaeologist who has awoken among the ruins of an ancient alien landscape. With the distant help of another survivor you must solve the puzzles of this mysterious world and find a way back home. Q.U.B.E. 2 is a adventure, action and indie game developed by Toxic Games and published by Trapped Nerve Games. Released on March 13th 2018 has received 1,655 reviews of which 1,396 were positive and 259 were negative resulting in a rating of 8.1 out of 10. Currently offered at a significant 98% discount, this title has earned the #8 position in the best deals for games like Iron Marines.
8.1
1,396
259

-98% 17.99€ 0.46€

9. CRYPTARK

Similarity 54% Cryptark is a 2D sci-fi shooter where you take on the role of a heavily armed privateer seeking to earn government contracts by boarding deadly alien space-hulks. It's up to you to strategize a plan of attack, pick an equipment loadout, and destroy the central core to be victorious. CRYPTARK is a action roguelike, action and indie game developed and published by Alientrap. Released on June 20th 2017 has received 1,822 reviews of which 1,502 were positive and 320 were negative resulting in a rating of 7.9 out of 10. Currently offered at a significant 98% discount, this title has earned the #9 position in the best deals for games like Iron Marines.
7.9
1,502
320

-98% 14.99€ 0.35€

10. Tooth and Tail

Similarity 59% Lead the revolution with an army of flamethrowing Boars, mustard gas-lobbing Skunks, and paratrooper-puking Owls. Tooth and Tail is a Real-Time-Strategy game featuring Single Player, Online Competitive Play, Split Screen, Replays, and more. Build a base, lead your army, eat your enemies! Tooth and Tail is a strategy, rts and pixel graphics game developed and published by Pocketwatch Games. Released on September 12th 2017 has received 4,057 reviews of which 3,242 were positive and 815 were negative resulting in a rating of 7.8 out of 10. Currently offered at a significant 98% discount, this title has earned the #10 position in the best deals for games like Iron Marines.
7.8
3,242
815

-98% 19.99€ 0.56€

Free games like Iron Marines on Steam

Check out this fantastic list of free-to-play games like Iron Marines 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 Iron Marines.

1. EMERGENCY

Similarity 47% Save lives – be a hero! Join forces against the chaos in the newest title of the award-winning EMERGENCY series. Take up your shift as incident commander and coordinate with other players to fight fires, arrest gangsters and rescue injured civilians. Your city needs you! EMERGENCY is a free to play, multiplayer and strategy game developed and published by Sixteen Tons Entertainment. Released on August 15th 2023 has received 5,564 reviews of which 3,797 were positive and 1,767 were negative resulting in a rating of 6.7 out of 10. With 197 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Iron Marines.
6.7
3,797
1,767

197
players

2. Star Trek Timelines

Similarity 49% 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 Iron Marines.
6.4
938
492

148
players

3. Endless Sky

Similarity 47% 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 6,651 reviews of which 6,141 were positive and 510 were negative resulting in a rating of 8.9 out of 10. Thanks to its free to play tag and a daily player base of 135, this game has secured the #3 spot in the ranking of free games like Iron Marines.
8.9
6,141
510

135
players

4. Hades' Star

Similarity 47% 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 #4 position in the best free games like Iron Marines.
7.1
1,874
703

104
players

5. Zero-K

Similarity 52% 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 #5 spot among the most played free games like Iron Marines.
9.0
3,678
244

93
players

6. Bloons Adventure Time TD

Similarity 47% Defend Ooo from the Bloon invasion in this epic tower defense crossover. Bloons Adventure Time TD is a strategy, action and tower defense game developed and published by Ninja Kiwi. Released on January 16th 2019 has received 4,302 reviews of which 3,743 were positive and 559 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #6 spot among the most played free games like Iron Marines.
8.4
3,743
559

89
players

7. My Lands: Black Gem Hunting

Similarity 51% 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 Iron Marines.
8.1
2,766
540

51
players

8. Planet S

Similarity 51% 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 #8 spot among the most played free games like Iron Marines.
8.8
2,387
216

17
players

9. Art of War: Red Tides

Similarity 48% 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 6,918 reviews of which 5,458 were positive and 1,460 were negative resulting in a rating of 7.7 out of 10. The game currently holds the #9 spot among the most played free games like Iron Marines.
7.7
5,458
1,460

9
players

10. Boid

Similarity 49% Boid is real-time strategy at its most primal - your only resource is your army. No funds to manage or infrastructures to build. It’s a kill or be killed battle of rapid decisions to dominate the gene pool. Boid is a free to play, strategy and indie game developed by Mokus and published by tinyBuild. Released on July 08th 2016 has received 743 reviews of which 594 were positive and 149 were negative resulting in a rating of 7.6 out of 10. The game currently holds the #10 spot among the most played free games like Iron Marines.
7.6
594
149

2
players