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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Alien Breed 3: Descent
Experience the final explosive chapter in the Alien Breed series and uncover the horrifying truth surrounding the existence of the Breed. Launch discount good thru Nov. 24 10am PST.
EARTH DEFENSE FORCE 5
Stand and fight for humanity. This arcade shooter takes place in the year 2022, as the Earth Defense Force fends off an all-out attack by unknown life forms. Become an EDF soldier, battle against endless hordes of immense enemies, and restore peace to the earth.
Shadowgrounds
Shadowgrounds breathes fresh air into the action genre with explosive combat sequences, an innovative weapon upgrade system, and an intriguing storyline. The adrenaline-pumping, top-down gameplay and audiovisual fireworks set the scene for this new action experience which also includes single computer (split keyboard or joystick) co-op...
Starship Troopers: Extermination
Starship Troopers: Extermination is a 16-player co-op FPS that puts you on the far-off frontlines of an all-out battle against the Bugs! Squad up, grab your rifle, and do your part as an elite Deep Space Vanguard Trooper to take back planets from the Arachnid threat!
Ultimate Zombie Defense
Team up or face it alone in this top down zombie slaying defense adventure! Featuring up to 4 player online co-op, cleanse the infected wave by wave and upgrade your base with traps & defenses to build the Ultimate Zombie Defense. Can YOU stop them?
Alien Breed 2: Assault
Can you survive the alien onslaught? Gamers across the world will now have a chance to play the next chapter in this high-budget, high-quality series.
Gatekeeper
Gatekeeper is a fast-paced rogue-like. Go on a quest to find the stolen Heart of the Universe and shoot your way through the hordes of machine enemies guarding the planetary gates. Play solo or in 4 people co-op and become the next Guardian!
Livelock
Livelock is a co-operative top-down shooter where you play solo or with up to two allies to break the cycle of infinite war between machines. As one of the remaining Capital Intellects, your role is to unlock Eden and revive humanity.
RUNNING WITH RIFLES
RUNNING WITH RIFLES is a top-down tactical shooter with open world RPG elements. In RWR, you join the ranks of an army as a common soldier, just like the thousands around you.
EARTH DEFENSE FORCE: WORLD BROTHERS
A new EDF adventure begins! Only this time, the action unfolds in a parallel world where the Earth is made of digital blocks. This world has befallen into chaos, as the once peaceful square Earth has been shattered into pieces. Shape aside, it is an Earth nonetheless which needs to be defended.
EARTH DEFENSE FORCE 4.1 The Shadow of New Despair
It's a fight for the future of the planet between the Ravagers, a merciless swarm of alien invaders, and the Earth Defense Force (EDF) in this third-person shooter.Play as four different classes in over 80 missions with a range of 800 weapons at your disposal.Co-op play supported.
Call of Duty®: Black Ops II
Pushing the boundaries of what fans have come to expect from the record-setting entertainment franchise, Call of Duty®: Black Ops II propels players into a near future Cold War
Space Hulk: Deathwing Enhanced Edition
Space Hulk: Deathwing - Enhanced Edition is a First-Person Shooter based on Games Workshop’s cult classic board game set in Warhammer 40,000 universe. Expanding upon the original game, and featuring a host of new content, new features and a richer multiplayer mode.
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!
Killing Floor
6-player co-op survival horror at its finest! Free updates, free special events and a ridiculous amount of fun!
Saints Row IV: Re-Elected
Experience the insane antics of Saints Row IV. The Saints have gone from the Penthouse to the White House - but Earth has been invaded and it’s up to you to save it with an arsenal of superpowers and strange weapons, in the wildest open world game ever.
Killing Floor 2
In KILLING FLOOR 2, players descend into continental Europe after it has been overrun by horrific, murderous clones called Zeds that were created by rogue elements of the Horzine Corporation. 6-player Co-Op & 12-player VS Zed-slaughtering mayhem.
Sanctum
You think Tower Defense games are all about building? You thought wrong. Sanctum is not your average Tower Defense title. When the havoc starts, you get to join the fray! As one of the world’s first First Person Shooter - Tower Defense games, Sanctum has taken the best of both worlds to deliver an epic, one-of-a-kind experience.
Warhammer 40,000: Space Marine - Anniversary Edition
In Warhammer 40,000 Space Marine you are Captain Titus, a Space Marine of the Ultramarines chapter and a seasoned veteran of countless battles.
Hellbreach: Vegas
Hellbreach: Vegas is a Wave-based First-Person Shooter for 1-4 players, made with passion by a one man dev team! Set your loadout, kill, and earn cash. Take a spin on the various slot machines and level up to improve your survival chances. Are you ready to try your luck?
Sniper Elite: Nazi Zombie Army 2
** Please note: a remastered and improved edition of this game is now available in Zombie Army Trilogy.**Experience a terrifyingly intense co-op campaign for up to four players in this gut-wrenching sequel to Steam best-seller, Sniper Elite: Nazi Zombie Army.
Depth
Play as a shark or a diver in a dark aquatic world and overcome your enemies by employing cunning, teamwork, and stealth. Depth blends tension and visceral action as you team up against AI or be matched with other players in heart pounding combat.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 April 19th 2025.
1. Marvel Rivals
Similarity 65% Marvel Rivals is a Super Hero Team-Based PVP Shooter! Assemble an all-star Marvel squad, devise countless strategies by combining powers to form unique Team-Up skills and fight in destructible, ever-changing battlefields across the continually evolving Marvel universe! Marvel Rivals is a free to play, multiplayer and hero shooter game developed and published by NetEase Games. Released on December 05th 2024 has received 264,904 reviews of which 213,442 were positive and 51,462 were negative resulting in a rating of 8.0 out of 10. The game has hit the top spot as the #1 most played game like Alien Swarm, thanks to its 184,867 peak concurrent players over the last day.
8.0
213,442
51,462
184,867
players
2. Apex Legends™
Similarity 56% 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 987,640 reviews of which 663,258 were positive and 324,382 were negative resulting in a rating of 6.7 out of 10. While seeing 91,790 players online at once in the last 24 hours, this game is currently ranked #2 among games like Alien Swarm based on player count.
6.7
663,258
324,382
91,790
players
3. Team Fortress 2
Similarity 56% 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 1,151,067 reviews of which 1,031,715 were positive and 119,352 were negative resulting in a rating of 8.9 out of 10. While seeing 45,884 players online at once in the last 24 hours, this game is currently ranked #3 among games like Alien Swarm based on player count.
8.9
1,031,715
119,352
45,884
players
4. Warframe
Similarity 59% Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game Warframe is a free to play, action rpg and looter shooter game developed and published by Digital Extremes. Released on March 25th 2013 has received 621,274 reviews of which 541,215 were positive and 80,059 were negative resulting in a rating of 8.6 out of 10. With 45,100 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Alien Swarm.
8.6
541,215
80,059
45,100
players
5. HELLDIVERS™ 2
Similarity 58% 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 987,024 reviews of which 752,293 were positive and 234,731 were negative resulting in a rating of 7.6 out of 10. With 28,900 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Alien Swarm.
7.6
752,293
234,731
28,900
players
6. Left 4 Dead 2
Similarity 51% 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 952,732 reviews of which 929,269 were positive and 23,463 were negative resulting in an impressive rating of 9.7 out of 10. With 28,692 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Alien Swarm.
9.7
929,269
23,463
28,692
players
7. Delta Force
Similarity 56% 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 98,110 reviews of which 64,093 were positive and 34,017 were negative resulting in a rating of 6.5 out of 10. With 27,648 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Alien Swarm.
6.5
64,093
34,017
27,648
players
8. Destiny 2
Similarity 53% 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 622,838 reviews of which 496,312 were positive and 126,526 were negative resulting in a rating of 7.9 out of 10. With 25,922 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Alien Swarm.
7.9
496,312
126,526
25,922
players
9. Once Human
Similarity 57% 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 open world survival craft game developed and published by Starry Studio. Released on July 09th 2024 has received 124,888 reviews of which 92,215 were positive and 32,673 were negative resulting in a rating of 7.3 out of 10. With 16,245 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Alien Swarm.
7.3
92,215
32,673
16,245
players
10. THE FINALS
Similarity 56% Join THE FINALS, the world-famous, free-to-play, combat-centered game show! Fight alongside your teammates in virtual arenas that you can alter, exploit, and even destroy. Build your own playstyle in this first-person shooter to win escalating tournaments and lasting fame. THE FINALS is a destruction, free to play and multiplayer game developed and published by Embark Studios. Released on December 07th 2023 has received 226,447 reviews of which 175,772 were positive and 50,675 were negative resulting in a rating of 7.7 out of 10. With 14,201 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Alien Swarm.
7.7
175,772
50,675
14,201
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 April 19th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Alien Swarm.
1. This Means Warp
Similarity 52% 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 619 reviews of which 445 were positive and 174 were negative resulting in a rating of 6.9 out of 10. Featuring a massive 95% discount, this game currently holds the #1 spot in the best deals for games like Alien Swarm.
6.9
445
174
-95%
20.00€
1.00€
2. Killing Floor 2
Similarity 54% In KILLING FLOOR 2, players descend into continental Europe after it has been overrun by horrific, murderous clones called Zeds that were created by rogue elements of the Horzine Corporation. 6-player Co-Op & 12-player VS Zed-slaughtering mayhem. Killing Floor 2 is a zombies, multiplayer and online co-op game developed and published by Tripwire Interactive. Released on November 18th 2016 has received 126,438 reviews of which 110,946 were positive and 15,492 were negative resulting in a rating of 8.7 out of 10. Thanks to its incredible 92% discount, this game is now the #2 best deal in games like Alien Swarm.
8.7
110,946
15,492
-92%
29.13€
2.33€
3. Back 4 Blood
Similarity 51% Back 4 Blood is a thrilling cooperative first-person shooter from the creators of the critically acclaimed Left 4 Dead franchise. Experience the intense 4 player co-op narrative campaign, competitive multiplayer as human or Ridden, and frenetic gameplay that keeps you in the action. Back 4 Blood is a zombies, online co-op and multiplayer game developed by Turtle Rock Studios and published by Warner Bros. Games. Released on October 12th 2021 has received 67,778 reviews of which 46,346 were positive and 21,432 were negative resulting in a rating of 6.8 out of 10. Thanks to its incredible 92% discount, this game is now the #3 best deal in games like Alien Swarm.
6.8
46,346
21,432
-92%
61.13€
4.89€
4. Alien Breed 2: Assault
Similarity 61% Can you survive the alien onslaught? Gamers across the world will now have a chance to play the next chapter in this high-budget, high-quality series. Alien Breed 2: Assault is a action, shooter and aliens game developed and published by Team17 Digital Ltd. Released on September 22nd 2010 has received 1,002 reviews of which 698 were positive and 304 were negative resulting in a rating of 6.7 out of 10. Currently offered at a significant 90% discount, this title has earned the #4 position in the best deals for games like Alien Swarm.
6.7
698
304
-90%
9.99€
0.99€
5. Livelock
Similarity 59% Livelock is a co-operative top-down shooter where you play solo or with up to two allies to break the cycle of infinite war between machines. As one of the remaining Capital Intellects, your role is to unlock Eden and revive humanity. Livelock is a action, top-down shooter and co-op game developed by Tuque Games and published by Arc Games. Released on August 30th 2016 has received 832 reviews of which 662 were positive and 170 were negative resulting in a rating of 7.6 out of 10. Currently offered at a significant 89% discount, this title has earned the #5 position in the best deals for games like Alien Swarm.
7.6
662
170
-89%
9.82€
1.08€
6. Sniper Elite: Nazi Zombie Army 2
Similarity 53% ** Please note: a remastered and improved edition of this game is now available in Zombie Army Trilogy.**Experience a terrifyingly intense co-op campaign for up to four players in this gut-wrenching sequel to Steam best-seller, Sniper Elite: Nazi Zombie Army. Sniper Elite: Nazi Zombie Army 2 is a zombies, action and co-op game developed by and published by Rebellion. Released on October 31st 2013 has received 4,121 reviews of which 3,494 were positive and 627 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 88% discount, this title has earned the #6 position in the best deals for games like Alien Swarm.
8.2
3,494
627
-88%
14.67€
1.76€
7. Alien Breed 3: Descent
Similarity 69% Experience the final explosive chapter in the Alien Breed series and uncover the horrifying truth surrounding the existence of the Breed. Launch discount good thru Nov. 24 10am PST. Alien Breed 3: Descent is a action, shooter and isometric game developed and published by Team17 Digital Ltd. Released on November 17th 2010 has received 573 reviews of which 427 were positive and 146 were negative resulting in a rating of 7.1 out of 10. Currently offered at a significant 88% discount, this title has earned the #7 position in the best deals for games like Alien Swarm.
7.1
427
146
-88%
10.00€
1.20€
8. Alien Breed 2: Assault
Similarity 61% Can you survive the alien onslaught? Gamers across the world will now have a chance to play the next chapter in this high-budget, high-quality series. Alien Breed 2: Assault is a game developed and published by . Released on September 22nd 2010 has received 1,002 reviews of which 698 were positive and 304 were negative resulting in a rating of 6.7 out of 10. Currently offered at a significant 90% discount, this title has earned the #8 position in the best deals for games like Alien Swarm.
6.7
698
304
-90%
9.99€
0.99€
9. Killing Floor
Similarity 55% 6-player co-op survival horror at its finest! Free updates, free special events and a ridiculous amount of fun! Killing Floor is a fps, zombies and co-op game developed and published by Tripwire Interactive. Released on May 14th 2009 has received 67,316 reviews of which 63,885 were positive and 3,431 were negative resulting in an impressive rating of 9.3 out of 10. Currently offered at a significant 86% discount, this title has earned the #9 position in the best deals for games like Alien Swarm.
9.3
63,885
3,431
-86%
20.43€
2.86€
10. Serious Sam 3: BFE
Similarity 55% 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! Serious Sam 3: BFE is a fps, action and co-op game developed by Croteam and published by Devolver Digital. Released on November 22nd 2011 has received 27,644 reviews of which 24,428 were positive and 3,216 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 85% discount, this title has earned the #10 position in the best deals for games like Alien Swarm.
8.7
24,428
3,216
-85%
29.33€
4.40€
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 April 19th 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. Marvel Rivals
Similarity 65% Marvel Rivals is a Super Hero Team-Based PVP Shooter! Assemble an all-star Marvel squad, devise countless strategies by combining powers to form unique Team-Up skills and fight in destructible, ever-changing battlefields across the continually evolving Marvel universe! Marvel Rivals is a free to play, multiplayer and hero shooter game developed and published by NetEase Games. Released on December 05th 2024 has received 264,904 reviews of which 213,442 were positive and 51,462 were negative resulting in a rating of 8.0 out of 10. With 184,867 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Alien Swarm.
8.0
213,442
51,462
184,867
players
2. Apex Legends™
Similarity 56% 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 987,640 reviews of which 663,258 were positive and 324,382 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 91,790, this game has secured the #2 spot in the ranking of free games like Alien Swarm.
6.7
663,258
324,382
91,790
players
3. Team Fortress 2
Similarity 56% 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 1,151,067 reviews of which 1,031,715 were positive and 119,352 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 45,884, this game has secured the #3 spot in the ranking of free games like Alien Swarm.
8.9
1,031,715
119,352
45,884
players
4. Warframe
Similarity 59% Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game Warframe is a free to play, action rpg and looter shooter game developed and published by Digital Extremes. Released on March 25th 2013 has received 621,274 reviews of which 541,215 were positive and 80,059 were negative resulting in a rating of 8.6 out of 10. Attracting a solid base of 45,100 players due to its free access, this strategy game has achieved the #4 position in the best free games like Alien Swarm.
8.6
541,215
80,059
45,100
players
5. Delta Force
Similarity 56% 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 98,110 reviews of which 64,093 were positive and 34,017 were negative resulting in a rating of 6.5 out of 10. Attracting a solid base of 27,648 players due to its free access, this strategy game has achieved the #5 position in the best free games like Alien Swarm.
6.5
64,093
34,017
27,648
players
6. Destiny 2
Similarity 53% 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 622,838 reviews of which 496,312 were positive and 126,526 were negative resulting in a rating of 7.9 out of 10. Attracting a solid base of 25,922 players due to its free access, this strategy game has achieved the #6 position in the best free games like Alien Swarm.
7.9
496,312
126,526
25,922
players
7. Once Human
Similarity 57% 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 open world survival craft game developed and published by Starry Studio. Released on July 09th 2024 has received 124,888 reviews of which 92,215 were positive and 32,673 were negative resulting in a rating of 7.3 out of 10. Attracting a solid base of 16,245 players due to its free access, this strategy game has achieved the #7 position in the best free games like Alien Swarm.
7.3
92,215
32,673
16,245
players
8. THE FINALS
Similarity 56% Join THE FINALS, the world-famous, free-to-play, combat-centered game show! Fight alongside your teammates in virtual arenas that you can alter, exploit, and even destroy. Build your own playstyle in this first-person shooter to win escalating tournaments and lasting fame. THE FINALS is a destruction, free to play and multiplayer game developed and published by Embark Studios. Released on December 07th 2023 has received 226,447 reviews of which 175,772 were positive and 50,675 were negative resulting in a rating of 7.7 out of 10. Attracting a solid base of 14,201 players due to its free access, this strategy game has achieved the #8 position in the best free games like Alien Swarm.
7.7
175,772
50,675
14,201
players
9. FragPunk
Similarity 59% FragPunk is a thrilling 5v5 hero shooter where Shard Cards allow you to break the rules of combat and ensure that no two rounds are ever the same. Get ready to unleash your skills! FragPunk is a fps, free to play and hero shooter game developed and published by Bad Guitar Studio. Released on March 06th 2025 has received 33,468 reviews of which 24,577 were positive and 8,891 were negative resulting in a rating of 7.2 out of 10. Attracting a solid base of 8,765 players due to its free access, this strategy game has achieved the #9 position in the best free games like Alien Swarm.
7.2
24,577
8,891
8,765
players
10. World of Warships
Similarity 59% Immerse yourself in thrilling naval battles and assemble an armada of over 600 ships from the first half of the 20th century — from stealthy destroyers to gigantic battleships. Change the look of your ship, choose upgrades to suit your play style, and go into battle with other players! World of Warships is a free to play, naval combat and co-op game developed and published by Wargaming Group Limited. Released on November 15th 2017 has received 145,891 reviews of which 112,550 were positive and 33,341 were negative resulting in a rating of 7.6 out of 10. Attracting a solid base of 4,553 players due to its free access, this strategy game has achieved the #10 position in the best free games like Alien Swarm.
7.6
112,550
33,341
4,553
players