Games like Interloper on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like Interloper are available at the bottom of the page.
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Mushroom Wars 2
In Mushroom Wars 2, enemy tribes of feisty mushroom creatures face off in short but fierce RTS battles. Step into the shoes of a fearless Mushroom Commander, choose a hero to lead your army, and take control of the battlefield in a variety of multiplayer modes or challenging story campaign.
Istrolid
In Istrolid you design your own unique spaceships from a large number of parts to fit your strategy and play style. With no set units or factions you are free to create a fleet where each ship has its own balanced strengths and weaknesses, from basic fighters and bombers to hulking battleships and speedy destroyers.
Mushroom Wars
Mushroom Wars is a dynamic real-time strategy game, where smart strategy meets furious action in epic PvP and PvE battles.
Mitos.is: The Game
Step into the microscopic world of Mitos.is! Eat or be eaten—become the ultimate cell in a highly addictive multiplayer game. Diverse modes, daily tournaments, guilds, and gear await! The BEST game of 2015 is back!
RIOT: Civil Unrest
As civil crisis deepens and inequality tears the very fabric of society the discontentment of the masses manifests itself in violent public disturbances and civil disorder. Play as the police or the angry horde as RIOT – Civil Unrest places you in some of the world’s most fractious disputes.
Age of Conquest IV
Age of Conquest is a turn-based grand strategy wargame.
My Lands: Black Gem Hunting
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.
ROCKETSROCKETSROCKETS
ROCKETS fire ROCKETS at ROCKETS in this action-arcade, arena-combat, gorgeous festival-of-fireworks! It's dogfighting meets figure-skating in space with local multiplayer and single-player fast-paced action modes plus a ZEN MODE where ROCKETS learn to LOVE.
Infectonator: Survivors
"Infectonator : Survivors" is a Randomized Permadeath Survival Simulator that combines RTS, Tower Defense, Roguelike, and Management-Simulation gameplay. The goal is to lead a group of survivors in a struggle to stay alive and find rescue in a zombie apocalyptic world.
Door Kickers
Door Kickers is an innovative realtime strategy game that puts you in charge of a SWAT team and lets you command them during a tactical intervention.
CastleStorm
Welcome to the world of CastleStorm, a super genre mashup of 2D physics destruction mashed with tower defense brawler! CastleStorm was born out of the fond childhood memory of building and destroying LEGO castles.
Original War
An American geological expedition, under a UN mandate, assesses the natural resources in a distant part of Siberia, deep in the trackless steppes of Eastern Russia. But instead of oil, they discover a deposit of a hitherto unknown mineral.
Cannon Brawl
Cannon Brawl is action RTS and artillery hybrid. Pilot an airship, command powerful weapon emplacements and use the destructible terrain to out think and destroy your enemy! It's a new take on artillery strategy!
Dwarfs - F2P
Dwarfs!? is an addictive, fast paced arcade-like experience, with plenty of difficulty levels and game modes, in the tradition of great games such as “Lemmings” and “Dwarf Fortress”.
Cortex Command
Choose between different factions, with their own set of expendable soldiers, mechas, and weapons. Protect your brain, mine gold, and destroy the enemy cortex in his bunker complex!
Swords and Soldiers HD
Rewrite history as you take control of the brutal Vikings, the devious Aztecs or the crafty Chinese in their global quest to win the favour of the Gods! Swords & Soldiers is a side-scrolling strategy game that lets you control an entire army and lets you wield devastating magical abilities.
Gratuitous Space Battles
Who needs backstory? Who needs resource-gathering? Diplomacy is so last year. Gratuitous Space Battles cuts right to the chase of sci-fi strategy games, and deals with large, completely unjustified space battles between huge opposing space fleets.
Toy Shire: Room One
Are you prepared for a thrilling toy army tower defense adventure? Welcome to the Toy Shire! Battle diverse foes in various locations, defend your family, and repel foes from your area. Save the world by strengthening your defense with toy towers! FULL GAME AVAILABLE NOW!
Axon TD: Uprising - Tower Defense
Axon TD lets you expand the map boundaries themselves. A huge arsenal of towers and a wide variety of enemies clash in a battlefield that grows to your whims. Engage in single, cooperative, and roguelite gameplay.
Dummynation
Geopolitical management game with real-time shifting borders and a streamlined gameplay, designed to minimize all burdensome chores while allowing an absolute strategic control, from military recruitment and deployment, to diplomatic and economic management.
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.
Silica
Silica blends FPS and RTS in epic, photorealistic battles. Choose to fight on the ground or command from above as humans or aliens. Dive into thrilling multiplayer combat or master strategic command. Are you ready to survive and conquer?
Most played games like Interloper on Steam
Take a look at the top games like Interloper that are currently attracting the largest player bases on the Steam platform, as of April 19th 2025.
1. They Are Billions
Similarity 72% They Are Billions is a Steampunk strategy game set on a post-apocalyptic planet. Build and defend colonies to survive against the billions of the infected that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse? They Are Billions is a base-building, colony sim and strategy game developed and published by Numantian Games. Released on June 18th 2019 has received 48,423 reviews of which 41,225 were positive and 7,198 were negative resulting in a rating of 8.4 out of 10. The game has hit the top spot as the #1 most played game like Interloper, thanks to its 1,553 peak concurrent players over the last day.
8.4
41,225
7,198
1,553
players
2. Door Kickers 2: Task Force North
Similarity 72% Command military Special Ops Teams in gripping tactical combat against a Middle East-based terrorist network. Sequel to RockPaperShotgun's "Best Tactics Game of 2014". Door Kickers 2: Task Force North is a tactical, top-down and real-time with pause game developed and published by KillHouse Games. Released on February 10th 2025 has received 10,488 reviews of which 10,037 were positive and 451 were negative resulting in an impressive rating of 9.3 out of 10. While seeing 957 players online at once in the last 24 hours, this game is currently ranked #2 among games like Interloper based on player count.
9.3
10,037
451
957
players
3. War Selection
Similarity 72% War Selection is a compelling RTS game featuring base building, resource extraction and warfare. Evolve from a stone age tribe to a distinct industrial nation with unique game mechanics and battle for supremacy with dozens of players on a unique procedurally generated map. War Selection is a strategy, base-building and free to play game developed and published by Glyph Worlds. Released on October 08th 2019 has received 21,670 reviews of which 18,620 were positive and 3,050 were negative resulting in a rating of 8.4 out of 10. While seeing 588 players online at once in the last 24 hours, this game is currently ranked #3 among games like Interloper based on player count.
8.4
18,620
3,050
588
players
4. Mindustry
Similarity 75% An open-ended factory management game with RTS and tower defense elements. Mindustry is a base-building, resource management and tower defense game developed and published by AnukenDev. Released on September 26th 2019 has received 21,477 reviews of which 20,586 were positive and 891 were negative resulting in an impressive rating of 9.4 out of 10. With 582 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Interloper.
9.4
20,586
891
582
players
5. ENDLESS™ Space 2
Similarity 78% 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 22,087 reviews of which 18,447 were positive and 3,640 were negative resulting in a rating of 8.2 out of 10. With 544 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Interloper.
8.2
18,447
3,640
544
players
6. Sea Power : Naval Combat in the Missile Age
Similarity 72% From the lead designer of Cold Waters, Sea Power lets you control NATO and Warsaw Pact forces in modern naval conflict campaigns. Use your advanced naval weaponry and sensors to respect rules of engagement and defeat the enemy forces in a tense fight for initiative and air/naval supremacy. Sea Power : Naval Combat in the Missile Age is a naval combat, strategy and simulation game developed by Triassic Games AB and published by MicroProse Software. Released on November 12th 2024 has received 3,572 reviews of which 3,218 were positive and 354 were negative resulting in a rating of 8.7 out of 10. With 483 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Interloper.
8.7
3,218
354
483
players
7. Ultimate General: Civil War
Similarity 72% Ultimate General: Civil War is a tactical real time strategy war-game. Experience the bloodiest period of U.S. history - the American Civil War of 1861-1865. Ultimate General: Civil War is a wargame, real time tactics and war game developed and published by Game-Labs. Released on July 14th 2017 has received 7,913 reviews of which 7,064 were positive and 849 were negative resulting in a rating of 8.7 out of 10. With 477 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Interloper.
8.7
7,064
849
477
players
8. Dawn of Man
Similarity 72% Command a settlement of ancient humans, guide them through the ages in their struggle for survival. Hunt, gather, craft tools, fight, research new techs and face the challenges the environment will throw at you. Dawn of Man is a city builder, colony sim and survival game developed and published by Madruga Works. Released on March 01st 2019 has received 17,018 reviews of which 14,783 were positive and 2,235 were negative resulting in a rating of 8.5 out of 10. With 474 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Interloper.
8.5
14,783
2,235
474
players
9. Dune: Spice Wars
Similarity 72% 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. Dune: Spice Wars is a management, singleplayer and sci-fi game developed by Shiro Games and published by Shiro Games and Funcom. Released on September 14th 2023 has received 12,346 reviews of which 9,837 were positive and 2,509 were negative resulting in a rating of 7.8 out of 10. With 401 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Interloper.
7.8
9,837
2,509
401
players
10. Steel Division 2
Similarity 72% Steel Division 2 is a historically-accurate WW2 real-time strategy game set on the Eastern Front. Features 1:1-scale turn-based army management and real-time tactical battles with thousands of men at your order. Steel Division 2 is a strategy, rts and world war ii game developed and published by Eugen Systems. Released on June 20th 2019 has received 8,965 reviews of which 7,145 were positive and 1,820 were negative resulting in a rating of 7.8 out of 10. With 363 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Interloper.
7.8
7,145
1,820
363
players
Best deals on games like Interloper on Steam
Discover fantastic savings with the best discounts on a variety of games like Interloper available on Steam right now, updated on April 19th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Interloper.
1. Oriental Empires
Similarity 78% Turn based 4X strategy game, recreating the civilizations of ancient China. Develop your land, build great cities, raise huge armies and fight epic battles, with hundreds of soldiers fighting right on the game map. Advance your technologies, culture and religion to create one of mankind’s biggest empires. Oriental Empires is a strategy, simulation and indie game developed by Shining Pixel Studios and published by Iceberg Interactive. Released on September 14th 2017 has received 2,928 reviews of which 2,354 were positive and 574 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 Interloper.
7.8
2,354
574
-95%
30.00€
1.50€
2. Planets Under Attack
Similarity 72% Play as humans or robots in a brand new sci-fi strategy adventure! Travel into the far reaches of space, through cleverly designed star constellations and variable game modes, conquering enemy planets using 15 combinable technologies. Planets Under Attack is a strategy, indie and space game developed by Targem Games and published by TopWare Interactive. Released on September 27th 2012 has received 1,113 reviews of which 806 were positive and 307 were negative resulting in a rating of 7.0 out of 10. Thanks to its incredible 92% discount, this game is now the #2 best deal in games like Interloper.
7.0
806
307
-92%
12.50€
1.00€
3. Anomaly 2
Similarity 72% 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. Anomaly 2 is a strategy, action and indie game developed and published by 11 bit studios. Released on May 15th 2013 has received 1,017 reviews of which 804 were positive and 213 were negative resulting in a rating of 7.5 out of 10. Thanks to its incredible 90% discount, this game is now the #3 best deal in games like Interloper.
7.5
804
213
-90%
22.99€
2.29€
4. Bloodsports.TV
Similarity 72% Co-Op Hero Defense set in a deadly post-apocalyptic Sweden. Team up with your friends and protect the Missile Silo against horrific beasts and outlaws. Bloodsports.TV is a action, hack and slash and indie game developed by Toadman Interactive and Fatshark and published by Fatshark. Released on March 30th 2015 has received 651 reviews of which 508 were positive and 143 were negative resulting in a rating of 7.4 out of 10. Currently offered at a significant 90% discount, this title has earned the #4 position in the best deals for games like Interloper.
7.4
508
143
-90%
9.99€
0.99€
5. Clustertruck
Similarity 72% Clustertruck is a chaotic physics based truckformer. Jump your way through insane levels in a game of "the floor is lava" on top of speeding trucks driven by terrible drivers. Clustertruck is a parkour, automobile sim and action game developed by landfall and published by tinyBuild. Released on September 27th 2016 has received 16,965 reviews of which 15,861 were positive and 1,104 were negative resulting in an impressive rating of 9.1 out of 10. Currently offered at a significant 88% discount, this title has earned the #5 position in the best deals for games like Interloper.
9.1
15,861
1,104
-88%
14.67€
1.76€
6. S.W.I.N.E. HD Remaster
Similarity 78% S.W.I.N.E. HD Remaster is the new edition of the challenging classic strategy game S.W.I.N.E! The filthiest of all wars between the Rabbit and the Pig armies is a sophisticated real-time strategy with completely revised textures, detailed unit models, a 16:9 adapted interface. S.W.I.N.E. HD Remaster is a strategy, rts and retro game developed by Kite Games and published by Kite Games and WhisperGames. Released on May 23rd 2019 has received 1,186 reviews of which 1,081 were positive and 105 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 88% discount, this title has earned the #6 position in the best deals for games like Interloper.
8.6
1,081
105
-88%
10.00€
1.20€
7. SPACECOM
Similarity 81% SPACECOM – a strategic-to-the-bone, starfleet command game in which deception, smart movement, and choices to battle decide victory or defeat. SPACECOM is a rts, strategy and indie game developed by Flow Combine and published by 11 bit studios. Released on September 17th 2014 has received 514 reviews of which 352 were positive and 162 were negative resulting in a rating of 6.6 out of 10. Currently offered at a significant 85% discount, this title has earned the #7 position in the best deals for games like Interloper.
6.6
352
162
-85%
9.99€
1.49€
8. YORG.io 3
Similarity 72% Defend, Attack, Survive! Build up your base and defeat the zombies with this unique combination of tower defense, base building and supply chain management. Now with multiplayer, mods and loads of new content! YORG.io 3 is a strategy, casual and tower defense game developed by Tobias Springer and published by tobspr Games. Released on October 13th 2019 has received 302 reviews of which 202 were positive and 100 were negative resulting in a rating of 6.4 out of 10. Currently offered at a significant 85% discount, this title has earned the #8 position in the best deals for games like Interloper.
6.4
202
100
-85%
5.99€
0.89€
9. Oriental Empires
Similarity 78% Turn based 4X strategy game, recreating the civilizations of ancient China. Develop your land, build great cities, raise huge armies and fight epic battles, with hundreds of soldiers fighting right on the game map. Advance your technologies, culture and religion to create one of mankind’s biggest empires. Oriental Empires is a game developed and published by . Released on September 14th 2017 has received 2,928 reviews of which 2,354 were positive and 574 were negative resulting in a rating of 7.8 out of 10. Currently offered at a significant 95% discount, this title has earned the #9 position in the best deals for games like Interloper.
7.8
2,354
574
-95%
30.00€
1.50€
10. Element TD 2 - Tower Defense
Similarity 72% Element TD 2 sees you combine powerful elements to create unique towers. Prove your defenses against challenging foes, and compete or cooperate with others to determine who has mastered the elements. Element TD 2 - Tower Defense is a tower defense, real time tactics and multiplayer game developed and published by Element Studios. Released on April 02nd 2021 has received 2,993 reviews of which 2,681 were positive and 312 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 81% discount, this title has earned the #10 position in the best deals for games like Interloper.
8.6
2,681
312
-81%
14.11€
2.68€
Free games like Interloper on Steam
Check out this fantastic list of free-to-play games like Interloper you can enjoy on Steam right now, updated on April 19th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like Interloper.
1. War Selection
Similarity 72% War Selection is a compelling RTS game featuring base building, resource extraction and warfare. Evolve from a stone age tribe to a distinct industrial nation with unique game mechanics and battle for supremacy with dozens of players on a unique procedurally generated map. War Selection is a strategy, base-building and free to play game developed and published by Glyph Worlds. Released on October 08th 2019 has received 21,670 reviews of which 18,620 were positive and 3,050 were negative resulting in a rating of 8.4 out of 10. With 588 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Interloper.
8.4
18,620
3,050
588
players
2. Zero-K
Similarity 72% 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 3,856 reviews of which 3,613 were positive and 243 were negative resulting in an impressive rating of 9.0 out of 10. Thanks to its free to play tag and a daily player base of 147, this game has secured the #2 spot in the ranking of free games like Interloper.
9.0
3,613
243
147
players
3. Hades' Star
Similarity 81% 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 123, this game has secured the #3 spot in the ranking of free games like Interloper.
7.1
1,864
697
123
players
4. Mitos.is: The Game
Similarity 75% Step into the microscopic world of Mitos.is! Eat or be eaten—become the ultimate cell in a highly addictive multiplayer game. Diverse modes, daily tournaments, guilds, and gear await! The BEST game of 2015 is back! Mitos.is: The Game is a free to play, multiplayer and massively multiplayer game developed and published by Freakinware Studios. Released on July 29th 2015 has received 11,819 reviews of which 9,549 were positive and 2,270 were negative resulting in a rating of 7.9 out of 10. The game currently holds the #4 spot among the most played free games like Interloper.
7.9
9,549
2,270
57
players
5. My Lands: Black Gem Hunting
Similarity 75% 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 3,305 reviews of which 2,767 were positive and 538 were negative resulting in a rating of 8.1 out of 10. The game currently holds the #5 spot among the most played free games like Interloper.
8.1
2,767
538
52
players
6. AirMech
Similarity 83% 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 10,650 reviews of which 8,957 were positive and 1,693 were negative resulting in a rating of 8.2 out of 10. The game currently holds the #6 spot among the most played free games like Interloper.
8.2
8,957
1,693
50
players
7. Planet S
Similarity 72% 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 2,565 reviews of which 2,352 were positive and 213 were negative resulting in a rating of 8.8 out of 10. The game currently holds the #7 spot among the most played free games like Interloper.
8.8
2,352
213
17
players
8. Age of Conquest IV
Similarity 75% Age of Conquest is a turn-based grand strategy wargame. Age of Conquest IV is a free to play, strategy and turn-based strategy game developed and published by Noble Master LLC. Released on April 05th 2016 has received 2,741 reviews of which 2,236 were positive and 505 were negative resulting in a rating of 7.9 out of 10. The game currently holds the #8 spot among the most played free games like Interloper.
7.9
2,236
505
16
players
9. Zombie Defense
Similarity 75% A modern hybrid of the classic RTS and modern Tower Defense. Recruit soldiers, place them on slots and let them shoot incoming waves of zombies by their own. Order supplies, throw grenades, order airstrikes and many more... Perfect mix of strategy, tactics and micromanagement. Zombie Defense is a free to play, zombies and tower defense game developed and published by Home Net Games. Released on September 30th 2016 has received 2,144 reviews of which 1,801 were positive and 343 were negative resulting in a rating of 8.1 out of 10. The game currently holds the #9 spot among the most played free games like Interloper.
8.1
1,801
343
15
players
10. Art of War: Red Tides
Similarity 72% 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 6,893 reviews of which 5,437 were positive and 1,456 were negative resulting in a rating of 7.7 out of 10. The game currently holds the #10 spot among the most played free games like Interloper.
7.7
5,437
1,456
13
players