Single-player games like Bunker 21 Extended Edition
Below are 12 single-player Steam games similar to Bunker 21 Extended Edition, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Bunker 21 Extended Edition page.
Ranked picks
- 1
Final Breach
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Action and Adventure with Bunker 21 Extended Edition.
Final Breach is a stylized PBR horde survival FPS. Battle endless waves of grotesque undead in vibrant, high-fidelity maps. Upgrade your arsenal, grab powerful perks, and wield devastating firepower as the chaos intensifies.
- 2
Night Of the Loving Dead
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Action and Indie with Bunker 21 Extended Edition.
Easy game for easy life. Enjoy.
- 3
Left 4 Dead 2
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Action with Bunker 21 Extended Edition.
Set in the zombie apocalypse, Left 4 Dead 2 is a 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.
- 4
Left 4 Dead
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Action with Bunker 21 Extended Edition.
From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters.
- 5
Killing Floor 2
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Action with Bunker 21 Extended Edition.
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.
- 6
S.T.A.L.K.E.R.: Call of Pripyat
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Action with Bunker 21 Extended Edition.
S.T.A.L.K.E.R.: Call of Pripyat is the direct sequel of the S.T.A.L.K.E.R.: Shadow of Chernobyl. As a Major Alexander Degtyarev you should investigate the crash of the governmental helicopters around the Zone and find out, what happened there.
- 7
Contagion
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Action and Indie with Bunker 21 Extended Edition.
Contagion isn't your average Zombie Shooter but instead takes a more realistic and different approach to the popular genre with unique characters, environments, weapons, items, and a built in system that makes every round completely unpredictable with resources, objectives, and paths ever changing.
- 8
Dead Effect 2
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Action and Indie with Bunker 21 Extended Edition.
Dead Effect 2 is the newest addition to the acclaimed Dead Effect franchise. This action sci-fi shooter is looking to push the boundaries of first-person shooters to new levels with slick graphics, rich narrative and RPG elements.
- 9
Meltopia
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Indie and Adventure with Bunker 21 Extended Edition.
A minimalist game where you melt snow with a heat cannon to explore a mysterious frozen world. Uncover glacial secrets, collect valuable resources and ancient artifacts — and ultimately find and assemble the remains of an ancient Mammoth.
- 10
Let's Journey
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Action and Indie with Bunker 21 Extended Edition.
Let's Journey - idle clicker rpg in amazing fantasy world. Choose your hero, roll dice and embark on an epic adventure! During the journey you will defeat hundreds of monsters, find rare equipment and meet legendary dragons.
- 11
Nordicandia
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Action and Indie with Bunker 21 Extended Edition.
A semi-idle action RPG with a deep and unique crafting system. Collect epic loot, craft and merge items, and level up your character to beat the World Bosses!
- 12
Silicone Heart
Single-player alternative to Bunker 21 Extended Edition — playable solo, no multiplayer required. Shares Indie with Bunker 21 Extended Edition.
Build a self-sustaining cyber farm on a planet-sized junkyard. Grow biomechanical crops, automate production, repair discarded robots, and secretly reshape a mechanical society from the inside in this cozy farming and automation adventure.