Games like Alien Swarm on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like Alien Swarm are available at the bottom of the page.
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SCP: Escape Together
In the midst of a site-wide containment breach, you must team up with other Class-D personnel to escape the underground, isolated facility while evading the dangerous anomalies that have breached containment.
Black Squad
Black Squad is a free-to-play military first-person-shooter. Players can master their skills and show off their strategies with a wide range of game maps, modes, and weapons to choose from. Join thousands of FPS players worldwide in one of the most played games on Steam!
FPS Game: Dev Test
A Simple, Fun, Multiplayer FPS game, strictly built and packaged for development testing and networking development.
Double Action: Boogaloo
Double Action is a free stylish multiplayer game about diving, flipping, and sliding your way into action movie mayhem.
pla_toon
pla_toon is an action-packed, first-and-third-person, multiplayer, light-hearted, cartoon-style shooter where you as play a soldier. Join the multiplayer battle and be the first to a para-crate drop to equip your player with powerful weapons! Or get on an ostrich and ride off into the sunset...
Formicide
Formicide is a fast-paced 2D online platformer with a lineup of versatile classes. Think Worms meets Team Fortress 2. Face off with teammates against enemies in destructible environments with the weapons and abilities at your disposal.
Spectre Divide
Spectre Divide is the genre-evolving, free-to-play 3v3 tactical shooter driven by Duality. Use Duality to control two bodies in real-time, letting you defend two sites at once, cover your own cross, or even trade yourself. Master tactical gunplay and an arsenal of future tech to achieve infamy.
Stars End
Stars End is a sci-fi survival sandbox set on the wild frontier of a distant star system. Play solo or host your own server as you craft, build, and battle to survive in a galaxy shaped by danger, discovery, and your own grit.
Splitgate 2
Splitgate 2 is the only free-to-play shooter with portals, delivering next-level gunplay, fluid movement, and a constantly evolving experience, featuring a new Battle Royale where you can portal between unique worlds. Welcome to the future of sport.
ONE PIECE Bounty Rush
Take the loot, pirates! Bounty Rush is a 4 vs 4 multiplayer team action game. Work with your team to capture the other teams' berries!
The Expendabros
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
Blood Strike
Gather your friends and dive into the action-packed Battle Royale, Squad Fight, or Hot Zone like there's no tomorrow! Blood Strike offers a wide range of playable Strikers, each with a unique active and passive ability letting you deploy drones, shield walls and everything in between.
Yet Another Zombie Defense
Darkness is coming. How long can YOU survive? Build your base by day, defend it by night. Play in online or local co-op. Stay alive as long as you can.
This Means Warp
It’s co-op space survival fun, Jim, but not as we know it. This Means Warp is an intense spaceship management roguelite experience for 1-4 players. Explore a procedurally generated universe, upgrade your ship, battle dangerous enemies and adapt your strategies to survive in a hostile galaxy.
MechWarrior Online™ Legends
MechWarrior Online™ Legends is a tactical, 'Mech-based online shooter set in the vast BattleTech Universe. Assume the role of an elite MechWarrior, piloting powerful BattleMechs, fighting for supremacy over the Inner Sphere.
ORION: Prelude
Work together to survive the devastating Dinosaur horde in huge, endless environments.
Serious Sam 3: BFE
Serious Sam 3: BFE is a prequel to the original indie fast action FPS and Game of the Year sensation - Serious Sam: The First Encounter!
Left 4 Dead 2
Set in the zombie apocalypse, Left 4 Dead 2 (L4D2) is the highly anticipated sequel to the award-winning Left 4 Dead, the #1 co-op game of 2008. This co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.
TOXIKK™
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.
It Takes Two Friend's Pass
Download Friend's Pass* and play It Takes Two with a friend for free. Just grab a friend who owns the full game, download Friend's Pass for free, and play together!
STAR WARS™ Battlefront™ II
Be the hero in the ultimate STAR WARS™ battle fantasy with STAR WARS™ Battlefront™ II: Celebration Edition!
Most played games like Alien Swarm on Steam
Take a look at the top games like Alien Swarm that are currently attracting the largest player bases on the Steam platform, as of June 15th 2025.
1. Dota 2
Similarity 52% Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has taken on a life of its own. Dota 2 is a free to play, moba and multiplayer game developed and published by Valve. Released on July 09th 2013 has received 2,498,969 reviews of which 2,037,143 were positive and 461,826 were negative resulting in a rating of 8.1 out of 10. The game has hit the top spot as the #1 most played game like Alien Swarm, thanks to its 367,943 peak concurrent players over the last day.
8.1
2,037,143
461,826
367,943
players
2. HELLDIVERS™ 2
Similarity 63% The Galaxy’s Last Line of Offence. Enlist in the Helldivers and join the fight for freedom across a hostile galaxy in a fast, frantic, and ferocious third-person shooter. HELLDIVERS™ 2 is a online co-op, pve and third-person shooter game developed by Arrowhead Game Studios and published by PlayStation Publishing LLC. Released on February 08th 2024 has received 1,017,635 reviews of which 775,883 were positive and 241,752 were negative resulting in a rating of 7.6 out of 10. While seeing 59,219 players online at once in the last 24 hours, this game is currently ranked #2 among games like Alien Swarm based on player count.
7.6
775,883
241,752
59,219
players
3. Apex Legends™
Similarity 51% Apex Legends is the award-winning, free-to-play Hero Shooter from Respawn Entertainment. Master an ever-growing roster of legendary characters with powerful abilities, and experience strategic squad play and innovative gameplay in the next evolution of Hero Shooter and Battle Royale. Apex Legends™ is a free to play, battle royale and multiplayer game developed by Respawn and published by Electronic Arts. Released on November 04th 2020 has received 994,979 reviews of which 668,053 were positive and 326,926 were negative resulting in a rating of 6.7 out of 10. While seeing 59,118 players online at once in the last 24 hours, this game is currently ranked #3 among games like Alien Swarm based on player count.
6.7
668,053
326,926
59,118
players
4. Team Fortress 2
Similarity 54% Nine distinct classes provide a broad range of tactical abilities and personalities. Constantly updated with new game modes, maps, equipment and, most importantly, hats! Team Fortress 2 is a free to play, hero shooter and multiplayer game developed and published by Valve. Released on October 10th 2007 has received 1,161,472 reviews of which 1,044,264 were positive and 117,208 were negative resulting in a rating of 8.9 out of 10. With 47,544 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Alien Swarm.
8.9
1,044,264
117,208
47,544
players
5. Delta Force
Similarity 51% Delta Force is back! The iconic series returns as the definitive free-to-play modern team-based tactical shooter and featuring three distinct gameplay modes: large-scale PvP warfare, intense extraction shooter action, and a remake of the legendary Black Hawk Down campaign. Delta Force is a free to play, fps and multiplayer game developed by Team Jade and published by TiMi Studio Group. Released on December 04th 2024 has received 114,627 reviews of which 72,717 were positive and 41,910 were negative resulting in a rating of 6.3 out of 10. With 34,526 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Alien Swarm.
6.3
72,717
41,910
34,526
players
6. Left 4 Dead 2
Similarity 58% Set in the zombie apocalypse, Left 4 Dead 2 (L4D2) is the highly anticipated sequel to the award-winning Left 4 Dead, the #1 co-op game of 2008. This co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns. Left 4 Dead 2 is a zombies, co-op and fps game developed and published by Valve. Released on November 16th 2009 has received 963,983 reviews of which 940,221 were positive and 23,762 were negative resulting in an impressive rating of 9.7 out of 10. With 30,782 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Alien Swarm.
9.7
940,221
23,762
30,782
players
7. Destiny 2
Similarity 49% Destiny 2 is an action MMO with a single evolving world that you and your friends can join anytime, anywhere, absolutely free. Destiny 2 is a free to play, open world and multiplayer game developed and published by Bungie. Released on October 01st 2019 has received 625,616 reviews of which 497,891 were positive and 127,725 were negative resulting in a rating of 7.9 out of 10. With 25,856 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Alien Swarm.
7.9
497,891
127,725
25,856
players
8. PAYDAY 2
Similarity 55% PAYDAY 2 is an action-packed, four-player co-op shooter that once again lets gamers don the masks of the original PAYDAY crew - Dallas, Hoxton, Wolf and Chains - as they descend on Washington DC for an epic crime spree. PAYDAY 2 is a co-op, action and fps game developed by OVERKILL - a Starbreeze Studio. and published by Starbreeze Publishing AB. Released on August 13th 2013 has received 663,082 reviews of which 594,327 were positive and 68,755 were negative resulting in a rating of 8.9 out of 10. With 23,535 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Alien Swarm.
8.9
594,327
68,755
23,535
players
9. Once Human
Similarity 53% Once Human is a multiplayer open-world survival game set in a strange, post-apocalyptic future. Unite with friends to fight monstrous enemies, uncover secret plots, compete for resources, and build your own territory. Once, you were merely human. Now, you have the power to remake the world. Once Human is a multiplayer, free to play and survival game developed and published by Starry Studio. Released on July 09th 2024 has received 131,199 reviews of which 97,203 were positive and 33,996 were negative resulting in a rating of 7.3 out of 10. With 21,393 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Alien Swarm.
7.3
97,203
33,996
21,393
players
10. Brawlhalla
Similarity 52% An epic platform fighter for up to 8 players online or local. Try casual free-for-alls, ranked matches, or invite friends to a private room. And it's free! Play cross-platform with millions of players on PlayStation, Xbox, Nintendo Switch, iOS, Android & Steam! Frequent updates. Over sixty Legends. Brawlhalla is a free to play, multiplayer and fighting game developed by Blue Mammoth Games and published by Ubisoft. Released on October 17th 2017 has received 386,456 reviews of which 314,809 were positive and 71,647 were negative resulting in a rating of 8.1 out of 10. With 14,377 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Alien Swarm.
8.1
314,809
71,647
14,377
players
Best deals on games like Alien Swarm on Steam
Discover fantastic savings with the best discounts on a variety of games like Alien Swarm available on Steam right now, updated on June 15th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Alien Swarm.
1. Strange Brigade
Similarity 57% Embark on an exotic journey into danger in this rip-roaring 1930s third person adventure for 1-4 players! Encounter pulse-pounding action, treacherous traps and tales of derring-do! Strange Brigade is a action, adventure and co-op game developed and published by Rebellion. Released on August 27th 2018 has received 10,728 reviews of which 9,034 were positive and 1,694 were negative resulting in a rating of 8.2 out of 10. Featuring a massive 99% discount, this game currently holds the #1 spot in the best deals for games like Alien Swarm.
8.2
9,034
1,694
-99%
49.99€
0.82€
2. Warhammer: End Times - Vermintide
Similarity 53% Vermintide is an epic co-operative action combat adventure set in the End Times of the iconic Warhammer Fantasy world. Warhammer: End Times - Vermintide is a action, online co-op and co-op game developed and published by Fatshark. Released on October 23rd 2015 has received 21,090 reviews of which 16,874 were positive and 4,216 were negative resulting in a rating of 7.9 out of 10. Thanks to its incredible 99% discount, this game is now the #2 best deal in games like Alien Swarm.
7.9
16,874
4,216
-99%
28.99€
0.48€
3. This Means Warp
Similarity 58% It’s co-op space survival fun, Jim, but not as we know it. This Means Warp is an intense spaceship management roguelite experience for 1-4 players. Explore a procedurally generated universe, upgrade your ship, battle dangerous enemies and adapt your strategies to survive in a hostile galaxy. This Means Warp is a survival, online co-op and space game developed by Outlier and published by Jagex Ltd. Released on May 04th 2023 has received 627 reviews of which 447 were positive and 180 were negative resulting in a rating of 6.8 out of 10. Thanks to its incredible 99% discount, this game is now the #3 best deal in games like Alien Swarm.
6.8
447
180
-99%
19.50€
0.38€
4. Police Stories
Similarity 53% A fresh take on top-down shooters with an emphasis on tactics that forces you to make split second decisions. Neutralize criminals, rescue civilians and defuse bombs in Single Player mode or Co-op. And remember - shooting first is not an option! Police Stories is a action, strategy and co-op game developed and published by HypeTrain Digital. Released on September 19th 2019 has received 8,701 reviews of which 7,406 were positive and 1,295 were negative resulting in a rating of 8.3 out of 10. Currently offered at a significant 98% discount, this title has earned the #4 position in the best deals for games like Alien Swarm.
8.3
7,406
1,295
-98%
19.99€
0.53€
5. The Blackout Club
Similarity 51% The Blackout Club is a first-person co-op horror game centered around a group of teenage friends investigating a monstrous secret beneath the skin of their small town. 1-4 players explore procedurally-generated missions against a fearsome enemy you can only see with your eyes closed. The Blackout Club is a horror, co-op and indie game developed and published by Question. Released on July 29th 2019 has received 2,847 reviews of which 2,214 were positive and 633 were negative resulting in a rating of 7.5 out of 10. Currently offered at a significant 98% discount, this title has earned the #5 position in the best deals for games like Alien Swarm.
7.5
2,214
633
-98%
28.99€
0.68€
6. F.E.A.R. 3
Similarity 56% F.E.A.R. 3 delivers all the hallmarks that define the F.E.A.R. brand: terrifying paranormal experience, frenetic combat and a dramatic storyline. F.E.A.R. 3 is a fps, horror and co-op game developed by Day 1 Studios and published by Warner Bros. Interactive Entertainment. Released on June 21st 2011 has received 12,758 reviews of which 9,070 were positive and 3,688 were negative resulting in a rating of 7.0 out of 10. Currently offered at a significant 98% discount, this title has earned the #6 position in the best deals for games like Alien Swarm.
7.0
9,070
3,688
-98%
19.99€
0.45€
7. Alien Rage - Unlimited
Similarity 50% Unleash a fury of powerful weapons as you blast your way through armies of Alien forces hell-bent on taking you down! Battle through 14 intense levels and prepare to face a barrage of beastly-sized bosses that will test your every skill. Each of your 10 weapons comes with two firing modes and you’ll need all of them! Alien Rage - Unlimited is a action, shooter and fps game developed and published by CI Games. Released on September 24th 2013 has received 3,455 reviews of which 2,334 were positive and 1,121 were negative resulting in a rating of 6.6 out of 10. Currently offered at a significant 98% discount, this title has earned the #7 position in the best deals for games like Alien Swarm.
6.6
2,334
1,121
-98%
19.99€
0.54€
8. From Space
Similarity 69% From Space is a solo and co-op action-shooter for squads up to four players. Take on the challenge of liberating the earth from an alien infestation with your friends, using over-the-top weaponry in a post-apocalyptic world with awesomely stylized graphics. The apocalypse has never been so much fun! From Space is a action, co-op and online co-op game developed by Triangle Studios and published by Curve Games. Released on November 03rd 2022 has received 1,884 reviews of which 1,277 were positive and 607 were negative resulting in a rating of 6.6 out of 10. Currently offered at a significant 98% discount, this title has earned the #8 position in the best deals for games like Alien Swarm.
6.6
1,277
607
-98%
14.99€
0.31€
9. Gunscape
Similarity 52% Gunscape provides easy-to-use tools based on a block-placement interface everybody's already familiar with to create all types of maps. Don't like building stuff? Then just blast your way through hordes of monsters or duel with other players! Gunscape is a action, indie and multiplayer game developed and published by Blowfish Studios. Released on March 01st 2016 has received 1,249 reviews of which 828 were positive and 421 were negative resulting in a rating of 6.4 out of 10. Currently offered at a significant 98% discount, this title has earned the #9 position in the best deals for games like Alien Swarm.
6.4
828
421
-98%
19.99€
0.52€
10. Stars End
Similarity 59% Stars End is a sci-fi survival sandbox set on the wild frontier of a distant star system. Play solo or host your own server as you craft, build, and battle to survive in a galaxy shaped by danger, discovery, and your own grit. Stars End is a co-op, massively multiplayer and multiplayer game developed by Reverie World Studios and published by indie.io. Released on January 08th 2023 has received 1,392 reviews of which 871 were positive and 521 were negative resulting in a rating of 6.1 out of 10. Currently offered at a significant 98% discount, this title has earned the #10 position in the best deals for games like Alien Swarm.
6.1
871
521
-98%
18.49€
0.44€
Free games like Alien Swarm on Steam
Check out this fantastic list of free-to-play games like Alien Swarm you can enjoy on Steam right now, updated on June 15th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like Alien Swarm.
1. Dota 2
Similarity 52% Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has taken on a life of its own. Dota 2 is a free to play, moba and multiplayer game developed and published by Valve. Released on July 09th 2013 has received 2,498,969 reviews of which 2,037,143 were positive and 461,826 were negative resulting in a rating of 8.1 out of 10. With 367,943 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Alien Swarm.
8.1
2,037,143
461,826
367,943
players
2. Apex Legends™
Similarity 51% Apex Legends is the award-winning, free-to-play Hero Shooter from Respawn Entertainment. Master an ever-growing roster of legendary characters with powerful abilities, and experience strategic squad play and innovative gameplay in the next evolution of Hero Shooter and Battle Royale. Apex Legends™ is a free to play, battle royale and multiplayer game developed by Respawn and published by Electronic Arts. Released on November 04th 2020 has received 994,979 reviews of which 668,053 were positive and 326,926 were negative resulting in a rating of 6.7 out of 10. Thanks to its free to play tag and a daily player base of 59,118, this game has secured the #2 spot in the ranking of free games like Alien Swarm.
6.7
668,053
326,926
59,118
players
3. Team Fortress 2
Similarity 54% Nine distinct classes provide a broad range of tactical abilities and personalities. Constantly updated with new game modes, maps, equipment and, most importantly, hats! Team Fortress 2 is a free to play, hero shooter and multiplayer game developed and published by Valve. Released on October 10th 2007 has received 1,161,472 reviews of which 1,044,264 were positive and 117,208 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 47,544, this game has secured the #3 spot in the ranking of free games like Alien Swarm.
8.9
1,044,264
117,208
47,544
players
4. Delta Force
Similarity 51% Delta Force is back! The iconic series returns as the definitive free-to-play modern team-based tactical shooter and featuring three distinct gameplay modes: large-scale PvP warfare, intense extraction shooter action, and a remake of the legendary Black Hawk Down campaign. Delta Force is a free to play, fps and multiplayer game developed by Team Jade and published by TiMi Studio Group. Released on December 04th 2024 has received 114,627 reviews of which 72,717 were positive and 41,910 were negative resulting in a rating of 6.3 out of 10. Attracting a solid base of 34,526 players due to its free access, this strategy game has achieved the #4 position in the best free games like Alien Swarm.
6.3
72,717
41,910
34,526
players
5. Destiny 2
Similarity 49% Destiny 2 is an action MMO with a single evolving world that you and your friends can join anytime, anywhere, absolutely free. Destiny 2 is a free to play, open world and multiplayer game developed and published by Bungie. Released on October 01st 2019 has received 625,616 reviews of which 497,891 were positive and 127,725 were negative resulting in a rating of 7.9 out of 10. Attracting a solid base of 25,856 players due to its free access, this strategy game has achieved the #5 position in the best free games like Alien Swarm.
7.9
497,891
127,725
25,856
players
6. Once Human
Similarity 53% Once Human is a multiplayer open-world survival game set in a strange, post-apocalyptic future. Unite with friends to fight monstrous enemies, uncover secret plots, compete for resources, and build your own territory. Once, you were merely human. Now, you have the power to remake the world. Once Human is a multiplayer, free to play and survival game developed and published by Starry Studio. Released on July 09th 2024 has received 131,199 reviews of which 97,203 were positive and 33,996 were negative resulting in a rating of 7.3 out of 10. Attracting a solid base of 21,393 players due to its free access, this strategy game has achieved the #6 position in the best free games like Alien Swarm.
7.3
97,203
33,996
21,393
players
7. Brawlhalla
Similarity 52% An epic platform fighter for up to 8 players online or local. Try casual free-for-alls, ranked matches, or invite friends to a private room. And it's free! Play cross-platform with millions of players on PlayStation, Xbox, Nintendo Switch, iOS, Android & Steam! Frequent updates. Over sixty Legends. Brawlhalla is a free to play, multiplayer and fighting game developed by Blue Mammoth Games and published by Ubisoft. Released on October 17th 2017 has received 386,456 reviews of which 314,809 were positive and 71,647 were negative resulting in a rating of 8.1 out of 10. Attracting a solid base of 14,377 players due to its free access, this strategy game has achieved the #7 position in the best free games like Alien Swarm.
8.1
314,809
71,647
14,377
players
8. Splitgate 2
Similarity 59% Splitgate 2 is the only free-to-play shooter with portals, delivering next-level gunplay, fluid movement, and a constantly evolving experience, featuring a new Battle Royale where you can portal between unique worlds. Welcome to the future of sport. Splitgate 2 is a shooter, free to play and multiplayer game developed and published by 1047 Games. Released on May 22nd 2025 has received 14,530 reviews of which 8,990 were positive and 5,540 were negative resulting in a rating of 6.1 out of 10. Attracting a solid base of 12,522 players due to its free access, this strategy game has achieved the #8 position in the best free games like Alien Swarm.
6.1
8,990
5,540
12,522
players
9. Unturned
Similarity 54% You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living. Unturned is a free to play, survival and zombies game developed and published by Smartly Dressed Games. Released on July 07th 2017 has received 555,368 reviews of which 506,516 were positive and 48,852 were negative resulting in an impressive rating of 9.0 out of 10. Attracting a solid base of 10,810 players due to its free access, this strategy game has achieved the #9 position in the best free games like Alien Swarm.
9.0
506,516
48,852
10,810
players
10. STALCRAFT: X
Similarity 50% STALCRAFT: X is the largest open-world online game in the Chernobyl Exclusion Zone. Explore the world full of mutants and anomalies alone or with friends — unforgettable emotions guaranteed. STALCRAFT: X is a free to play, mmorpg and multiplayer game developed and published by EXBO. Released on December 09th 2022 has received 78,974 reviews of which 59,715 were positive and 19,259 were negative resulting in a rating of 7.5 out of 10. Attracting a solid base of 6,371 players due to its free access, this strategy game has achieved the #10 position in the best free games like Alien Swarm.
7.5
59,715
19,259
6,371
players