Games like FBC: Firebreak on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like FBC: Firebreak are available at the bottom of the page.
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Prospekt
Prospekt begins in the Nova Prospekt prison in the Half-Life universe. Gordon Freeman is slowly being overrun by soldiers in the prison, however unknown to him, his Vortigaunt allies manage to find some help from a forgotten hero.
Cheaters Cheetah
Everyone will be given ACTUAL CHEATS in this multiplayer shooter. Use wallhacks and aimbots to your advantage and dominate the other cheetahs. The winner will get to BAN all losers!
Fistful of Frags
Multiplayer based, first person enabled, action packed and skill demanding shooter set in the Wild West times. A unique combination of non stop action and slow but powerful weaponry.
Metal Garden
Travel through an overgrown megastructure, and discover what lies beyond it. Metal Garden is a short, atmospheric singleplayer FPS game.
Grimhook
Bounce, dash, and grapple through flooded caverns in this fast-paced first-person action platformer. Descend into Grimhook's sunken ruins as Dart, mastering Lovecraftian powers and decimating robotic foes. Explore, battle, and unravel the mysteries below Miletos.
Zumbi Blocks 2 Open Alpha
Loot. Kill. Survive. Can you escape ? (probably not) Zumbi Blocks 2 is the official sequel to the 2013 free browser zombie game. Stuck on an island, cut off from the rest of humanity, you wake up. The secret to breaking free from this place lies asleep, underground. From the soil, zumbies emerge.
BioShock® 2
Set approximately 10 years after the events of the original BioShock, the halls of Rapture once again echo with sins of the past. Along the Atlantic coastline, a monster has been snatching little girls and bringing them back to the undersea city of Rapture.
BioShock™ 2 Remastered
In BioShock 2, you step into the boots of the most iconic denizen of Rapture, the Big Daddy, as you explore through the decrepit and beautiful fallen city, chasing an unseen foe in search of answers and your own survival.
INDUSTRIA
Embark on a gripping journey in INDUSTRIA, an atmospheric FPS set in Cold War-era East Berlin. Unravel the secrets of a mysterious parallel dimension while searching for a missing colleague. Explore a haunting reality where the truth awaits. Discover the dark past that lies beyond.
Xenus 2. White gold.
Caribbean islands; islands full of secrets, mystery and the spirit of romance. These islands are both beautiful and lethally dangerous. Centuries ago the waters of this region were teeming with pirates and adventurers... and frankly, not much has changed since then.
Judge Dredd: Dredd vs. Death
Welcome to Mega-City One, a city of over 400 million people - every one of them a potential criminal. It is the third decade of the 22nd Century, unemployment is widespread, boredom is universal and only the Judges can prevent total anarchy. Empowered to dispense instant justice, they are Judge, Jury and Executioner all in one.
STAR WARS™ Dark Forces (Classic, 1995)
Behind a veil of secrecy the evil Empire is creating a doomsday army - one that, if finished, will become the final cog in the Empire's arsenal of terror and domination. Your Mission? Join the Rebel Alliance's covert operations division, infiltrate the Empire.
Half-Life Deathmatch: Source
Half-Life Deathmatch: Source is a recreation of the first multiplayer game set in the Half-Life universe. Features all the classic weapons and most-played maps, now running on the Source engine.
Half-Life: Blue Shift
Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.
Delta Force 1
As a member of Delta Force — The Army's Elite, top secret special forces unit — the word 'impossible' is not in your vocabulary. In Delta Force, you will conduct missions swiftly and silently, in every possible terrain, under every imaginable condition and through unconventional means.
Hard Reset Extended Edition
Over-the-top destruction, loads of enemies & a beautifully realized cyberpunk setting. Hard Reset is here to shake up the shooter scene. Try the demo now.
Zula Global
Zula is an intense free-to-play FPS in which you can play cooperatively with your teammates to overthrow the enemy side. You can enjoy new content weekly and receive gifts every day. Variety of maps and weapons from the real world so you can immerse yourself 100%.
Meet Your Maker
Meet Your Maker is a building game of brutal expression and conquest. Unleash your inner evil genius in co-op or single-player to build the ultimate fortress of devious deathtraps, or take on those built by others in a high-stakes heist to steal resources essential for your survival.
Killing Floor
6-player co-op survival horror at its finest! Free updates, free special events and a ridiculous amount of fun!
Dirty Bomb®
Work together or die alone! Fight to restore peace to London or tear it down for profit in the most challenging team based shooter around.
Walking Zombie: Shooter
The Walking Zombie is a stationary FPS with an online co-op mode in a world full of zombies to kill. Buy and upgrade your weapons, kill all enemies in 200 levels and destroy mighty boss monsters before they eat you alive!
Turok 3: Shadow of Oblivion Remastered
Finish the hunt in this epic finale to the Turok Trilogy. Pick up immediately after the events of Turok 2: Seeds of Evil, with dual protagonists Joseph and Danielle Fireseed, of the Turok family tree, as they battle the titular antagonist Oblivion and its followers, the Flesh Eaters.
Half-Life: Source
Winner of over 50 Game of the Year awards, Half-Life set new standards for action games when it was released in 1998. Half-Life: Source is a digitally remastered version of the critically acclaimed and best selling PC game, enhanced via Source technology to include physics simulation, enhanced effects, and more.
Most played games like FBC: Firebreak on Steam
Take a look at the top games like FBC: Firebreak that are currently attracting the largest player bases on the Steam platform, as of June 20th 2025.
1. HELLDIVERS™ 2
Similarity 40% 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. The game has hit the top spot as the #1 most played game like FBC: Firebreak, thanks to its 37,845 peak concurrent players over the last day.
7.6
775,883
241,752
37,845
players
2. Left 4 Dead 2
Similarity 46% 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. While seeing 25,127 players online at once in the last 24 hours, this game is currently ranked #2 among games like FBC: Firebreak based on player count.
9.7
940,221
23,762
25,127
players
3. PAYDAY 2
Similarity 49% 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. While seeing 19,865 players online at once in the last 24 hours, this game is currently ranked #3 among games like FBC: Firebreak based on player count.
8.9
594,327
68,755
19,865
players
4. Borderlands 2
Similarity 40% The Ultimate Vault Hunter’s Upgrade lets you get the most out of the Borderlands 2 experience. Borderlands 2 is a loot, shooter and action game developed by Gearbox Software, Aspyr (Mac) and Aspyr (Linux) and published by Aspyr (Mac), Aspyr (Linux) and 2K. Released on September 20th 2012 has received 295,218 reviews of which 272,900 were positive and 22,318 were negative resulting in an impressive rating of 9.2 out of 10. With 7,728 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like FBC: Firebreak.
9.2
272,900
22,318
7,728
players
5. Deep Rock Galactic
Similarity 69% Deep Rock Galactic is a 1-4 player co-op FPS featuring badass space Dwarves, 100% destructible environments, procedurally-generated caves, and endless hordes of alien monsters. Deep Rock Galactic is a dwarf, co-op and pve game developed by Ghost Ship Games and published by Coffee Stain Publishing. Released on May 13th 2020 has received 343,000 reviews of which 333,587 were positive and 9,413 were negative resulting in an impressive rating of 9.6 out of 10. With 6,291 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like FBC: Firebreak.
9.6
333,587
9,413
6,291
players
6. Warhammer 40,000: Darktide
Similarity 44% Take back the city of Tertium from hordes of bloodthirsty foes in this intense and brutal action shooter. Warhammer 40,000: Darktide is the new co-op focused experience from the award-winning team behind the Vermintide series. As Tertium falls, Rejects Will Rise. Warhammer 40,000: Darktide is a horror, team-based and combat game developed and published by Fatshark. Released on November 30th 2022 has received 112,960 reviews of which 80,268 were positive and 32,692 were negative resulting in a rating of 7.0 out of 10. With 6,225 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like FBC: Firebreak.
7.0
80,268
32,692
6,225
players
7. Warhammer 40,000: Space Marine 2
Similarity 40% Embody the superhuman skill and brutality of a Space Marine. Unleash deadly abilities and devastating weaponry to obliterate the relentless Tyranid swarms. Defend the Imperium in spectacular third-person action in solo or multiplayer modes. Warhammer 40,000: Space Marine 2 is a warhammer 40k, action and third-person shooter game developed by Saber Interactive and published by Focus Entertainment. Released on September 09th 2024 has received 162,585 reviews of which 134,739 were positive and 27,846 were negative resulting in a rating of 8.2 out of 10. With 5,212 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like FBC: Firebreak.
8.2
134,739
27,846
5,212
players
8. Ready or Not
Similarity 40% Ready or Not is an intense, tactical, first-person shooter that depicts a modern-day world in which SWAT police units are called to defuse hostile and confronting situations. Ready or Not is a tactical, realistic and fps game developed by and published by Void Interactive. Released on December 13th 2023 has received 236,196 reviews of which 210,654 were positive and 25,542 were negative resulting in a rating of 8.8 out of 10. With 4,703 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like FBC: Firebreak.
8.8
210,654
25,542
4,703
players
9. Call of Duty®: Black Ops III
Similarity 42% Call of Duty®: Black Ops III Zombies Chronicles Edition includes the full base game plus the Zombies Chronicles content expansion. Call of Duty®: Black Ops III is a multiplayer, zombies and fps game developed by Treyarch and Aspyr (Mac) and published by Aspyr (Mac) and Activision. Released on November 05th 2015 has received 215,026 reviews of which 181,306 were positive and 33,720 were negative resulting in a rating of 8.4 out of 10. With 4,348 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like FBC: Firebreak.
8.4
181,306
33,720
4,348
players
10. Halo: The Master Chief Collection
Similarity 40% The Master Chief’s iconic journey includes six games, built for PC and collected in a single integrated experience. Whether you’re a long-time fan or meeting Spartan 117 for the first time, The Master Chief Collection is the definitive Halo gaming experience. Halo: The Master Chief Collection is a great soundtrack, fps and classic game developed by 343 Industries, Splash Damage, Ruffian Games, Bungie and Saber Interactive and published by Xbox Game Studios. Released on December 03rd 2019 has received 242,067 reviews of which 223,635 were positive and 18,432 were negative resulting in an impressive rating of 9.1 out of 10. With 3,678 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like FBC: Firebreak.
9.1
223,635
18,432
3,678
players
Best deals on games like FBC: Firebreak on Steam
Discover fantastic savings with the best discounts on a variety of games like FBC: Firebreak available on Steam right now, updated on June 20th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like FBC: Firebreak.
1. Deadlink
Similarity 42% Get ready to put a sizable dent in the profits of megacorporations in Deadlink, a guns-blazing cyberpunk FPS with roguelite elements. Your mission is to conduct covert ops while piloting a humanoid combat shell. And no, "covert" doesn’t mean "quiet." Deadlink is a fps, action roguelike and cyberpunk game developed by Gruby Entertainment and published by SuperGG.com. Released on July 27th 2023 has received 3,399 reviews of which 3,050 were positive and 349 were negative resulting in a rating of 8.6 out of 10. Featuring a massive 99% discount, this game currently holds the #1 spot in the best deals for games like FBC: Firebreak.
8.6
3,050
349
-99%
24.50€
0.41€
2. Warhammer: End Times - Vermintide
Similarity 42% 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 FBC: Firebreak.
7.9
16,874
4,216
-99%
28.99€
0.47€
3. ShootMania Storm
Similarity 41% ShootMania the FPS “Powered By Players”ShootMania Storm is revolutionizing the multiplayer FPS by adding a community dimension and unlimited replayability. Developed by the Nadeo studio, renowned for community racing game, TrackMania, ShootMania Storm boasts quick-fire matches and epic battles, where only your talent will distinguish you... ShootMania Storm is a action, shooter and fps game developed by Nadeo and published by Ubisoft. Released on April 10th 2013 has received 854 reviews of which 729 were positive and 125 were negative resulting in a rating of 8.1 out of 10. Thanks to its incredible 98% discount, this game is now the #3 best deal in games like FBC: Firebreak.
8.1
729
125
-98%
19.99€
0.46€
4. Borderlands: The Pre-Sequel
Similarity 46% Launch into the Borderlands universe and shoot ‘n’ loot your way through a brand new adventure that rockets you onto Pandora’s moon in Borderlands: The Pre-Sequel! Borderlands: The Pre-Sequel is a looter shooter, co-op and fps game developed by 2K Australia, Gearbox Software and Aspyr (Linux) and published by Aspyr (Linux) and 2K. Released on October 16th 2014 has received 42,379 reviews of which 33,577 were positive and 8,802 were negative resulting in a rating of 7.8 out of 10. Currently offered at a significant 98% discount, this title has earned the #4 position in the best deals for games like FBC: Firebreak.
7.8
33,577
8,802
-98%
39.99€
0.84€
5. F.E.A.R. 3
Similarity 53% 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 #5 position in the best deals for games like FBC: Firebreak.
7.0
9,070
3,688
-98%
19.99€
0.45€
6. Alien Rage - Unlimited
Similarity 48% 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 #6 position in the best deals for games like FBC: Firebreak.
6.6
2,334
1,121
-98%
19.99€
0.54€
7. Borderlands 2
Similarity 40% The Ultimate Vault Hunter’s Upgrade lets you get the most out of the Borderlands 2 experience. Borderlands 2 is a loot, shooter and action game developed by Gearbox Software, Aspyr (Mac) and Aspyr (Linux) and published by Aspyr (Mac), Aspyr (Linux) and 2K. Released on September 20th 2012 has received 295,218 reviews of which 272,900 were positive and 22,318 were negative resulting in an impressive rating of 9.2 out of 10. Currently offered at a significant 97% discount, this title has earned the #7 position in the best deals for games like FBC: Firebreak.
9.2
272,900
22,318
-97%
29.99€
0.95€
8. The Darkness II
Similarity 46% An intense first person shooter that delivers a twisted and gripping narrative of tragedy, modern crime drama, and supernatural horror. The Darkness II is a fps, action and gore game developed by Digital Extremes and published by 2K. Released on February 09th 2012 has received 19,772 reviews of which 18,121 were positive and 1,651 were negative resulting in a rating of 9.0 out of 10. Currently offered at a significant 97% discount, this title has earned the #8 position in the best deals for games like FBC: Firebreak.
9.0
18,121
1,651
-97%
29.99€
1.06€
9. Metro: Last Light Redux
Similarity 41% It is the year 2034. Beneath the ruins of post-apocalyptic Moscow, in the tunnels of the Metro, the remnants of mankind are besieged by deadly threats from outside – and within. Mutants stalk the catacombs beneath the desolate surface, and hunt amidst the poisoned skies above. Metro: Last Light Redux is a post-apocalyptic, fps and atmospheric game developed by 4A Games and published by Deep Silver. Released on August 27th 2014 has received 70,096 reviews of which 63,534 were positive and 6,562 were negative resulting in a rating of 8.9 out of 10. Currently offered at a significant 97% discount, this title has earned the #9 position in the best deals for games like FBC: Firebreak.
8.9
63,534
6,562
-97%
19.99€
0.75€
10. Shadow Warrior 2
Similarity 43% Shadow Warrior 2 is the stunning evolution of Flying Wild Hog’s offbeat first-person shooter starring the brash warrior Lo Wang, who must again wield a devastating combination of guns, blades, magic and wit to strike down the demonic legions overwhelming the world. Shadow Warrior 2 is a action, gore and looter shooter game developed by Flying Wild Hog and published by Devolver Digital. Released on October 13th 2016 has received 27,230 reviews of which 23,758 were positive and 3,472 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 97% discount, this title has earned the #10 position in the best deals for games like FBC: Firebreak.
8.6
23,758
3,472
-97%
28.99€
1.12€
Free games like FBC: Firebreak on Steam
Check out this fantastic list of free-to-play games like FBC: Firebreak you can enjoy on Steam right now, updated on June 20th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like FBC: Firebreak.
1. Halo Infinite
Similarity 41% From one of gaming's most iconic sagas, Halo is bigger than ever. Featuring an expansive open-world campaign and a dynamic free to play multiplayer experience. Halo Infinite is a free to play, fps and multiplayer game developed by 343 Industries and published by Xbox Game Studios. Released on November 15th 2021 has received 177,041 reviews of which 123,333 were positive and 53,708 were negative resulting in a rating of 6.9 out of 10. With 2,948 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like FBC: Firebreak.
6.9
123,333
53,708
2,948
players
2. Counter-Strike Nexon
Similarity 43% Counter-Strike Nexon is a Free to Play MMOFPS offering competitive PvP and PvE action including content from the original Counter-Strike and all new game modes, map creation function, weapons, and hordes of Zombies! Counter-Strike Nexon is a free to play, fps and zombies game developed by Valve and NEXON and published by NEXON. Released on October 07th 2014 has received 42,702 reviews of which 28,373 were positive and 14,329 were negative resulting in a rating of 6.6 out of 10. Thanks to its free to play tag and a daily player base of 316, this game has secured the #2 spot in the ranking of free games like FBC: Firebreak.
6.6
28,373
14,329
316
players
3. Sven Co-op
Similarity 49% Sven Co-op is a co-operative game originally based around Valve Software's Half-Life. In this game players must work together against computer controlled enemies and solve puzzles as a team. Sven Co-op is a co-op, fps and online co-op game developed and published by Sven Co-op team. Released on January 22nd 2016 has received 31,316 reviews of which 29,316 were positive and 2,000 were negative resulting in an impressive rating of 9.2 out of 10. Thanks to its free to play tag and a daily player base of 262, this game has secured the #3 spot in the ranking of free games like FBC: Firebreak.
9.2
29,316
2,000
262
players
4. Zula Global
Similarity 42% Zula is an intense free-to-play FPS in which you can play cooperatively with your teammates to overthrow the enemy side. You can enjoy new content weekly and receive gifts every day. Variety of maps and weapons from the real world so you can immerse yourself 100%. Zula Global is a free to play, fps and action game developed and published by Madbyte Games. Released on January 12th 2018 has received 7,595 reviews of which 5,310 were positive and 2,285 were negative resulting in a rating of 6.9 out of 10. Attracting a solid base of 194 players due to its free access, this strategy game has achieved the #4 position in the best free games like FBC: Firebreak.
6.9
5,310
2,285
194
players
5. Alien Swarm: Reactive Drop
Similarity 44% Co-operative top-down shooter game available for free. An epic bug hunt featuring a unique blend of co-op play and squad-level tactics. Alien Swarm: Reactive Drop is a twin stick shooter, pve and top-down shooter game developed and published by Reactive Drop Team. Released on April 20th 2017 has received 22,649 reviews of which 21,500 were positive and 1,149 were negative resulting in an impressive rating of 9.3 out of 10. Attracting a solid base of 114 players due to its free access, this strategy game has achieved the #5 position in the best free games like FBC: Firebreak.
9.3
21,500
1,149
114
players
6. Zumbi Blocks 2 Open Alpha
Similarity 43% Loot. Kill. Survive. Can you escape ? (probably not) Zumbi Blocks 2 is the official sequel to the 2013 free browser zombie game. Stuck on an island, cut off from the rest of humanity, you wake up. The secret to breaking free from this place lies asleep, underground. From the soil, zumbies emerge. Zumbi Blocks 2 Open Alpha is a multiplayer, action and open world survival craft game developed and published by Adrian Kaminski. Released on April 15th 2023 has received 7,967 reviews of which 7,068 were positive and 899 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #6 spot among the most played free games like FBC: Firebreak.
8.6
7,068
899
88
players
7. Fistful of Frags
Similarity 43% Multiplayer based, first person enabled, action packed and skill demanding shooter set in the Wild West times. A unique combination of non stop action and slow but powerful weaponry. Fistful of Frags is a pvp, arena shooter and fps game developed and published by Fistful of Frags Team. Released on May 09th 2014 has received 36,262 reviews of which 33,130 were positive and 3,132 were negative resulting in a rating of 9.0 out of 10. The game currently holds the #7 spot among the most played free games like FBC: Firebreak.
9.0
33,130
3,132
50
players
8. Dirty Bomb®
Similarity 42% Work together or die alone! Fight to restore peace to London or tear it down for profit in the most challenging team based shooter around. Dirty Bomb® is a hero shooter, free to play and fps game developed by Splash Damage and published by Warchest Ltd.. Released on June 02nd 2015 has received 57,167 reviews of which 46,464 were positive and 10,703 were negative resulting in a rating of 8.0 out of 10. The game currently holds the #8 spot among the most played free games like FBC: Firebreak.
8.0
46,464
10,703
40
players
9. BLOCKADE
Similarity 42% BLOCKADE Classic! First Person Shooter in an editable procedural cubic world. A large arsenal of weapons, 4 teams at the same time and up to 32 players on one map. A large number of game modes! BLOCKADE is a free to play, action and fps game developed and published by Novalink. Released on May 21st 2019 has received 11,459 reviews of which 8,570 were positive and 2,889 were negative resulting in a rating of 7.3 out of 10. The game currently holds the #9 spot among the most played free games like FBC: Firebreak.
7.3
8,570
2,889
24
players
10. Alien Swarm
Similarity 40% Co-operative multiplayer game and complete code base available for free. Alien Swarm is a free to play, co-op and action game developed and published by Valve. Released on July 19th 2010 has received 21,274 reviews of which 20,179 were positive and 1,095 were negative resulting in an impressive rating of 9.3 out of 10. The game currently holds the #10 spot among the most played free games like FBC: Firebreak.
9.3
20,179
1,095
19
players