Single-player games like DeadOS
Below are 13 single-player Steam games similar to DeadOS, 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 DeadOS page.
Ranked picks
- 1
Infection Free Zone
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie and Simulation with DeadOS.
Choose any real region from the world. Choose your base of operations, then rebuild and readapt the buildings around you to create a self-sustaining settlement. Take charge of a group of survivors from your city. And when the night falls - Defend the zone from the infected!
- 2
Cepheus Protocol
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie with DeadOS.
Cepheus Protocol is an Open World RTS Military Survival Game. Play as the CERC hunting Patient 0, maintain Quarantine camps, fight dangerous mutations & Rogue Civilian Combatants . There’s nobody else coming, it’s up to you now.
- 3
Jaws Of Extinction™
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie with DeadOS.
The island of Eden-Nadir, has fallen to a vicious mind consuming fungal parasite. Fight through the ashes of humanity to track down the truth behind the infection as one of four playable survivors before the outbreak spreads throughout the world.
- 4
State of Decay 2: Juggernaut Edition
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Simulation with DeadOS.
The dead have risen and civilization has fallen. Now it's up to you to gather survivors, scavenge for resources and build a community in a post-apocalyptic world – a world where you define what it means to survive in this ultimate zombie survival simulation.
- 5
The Black Masses
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie with DeadOS.
The Black Masses is an open world first-person fantasy co-op RPG. You find yourself stranded on an island corrupted by a strange black substance. Its unsuspecting inhabitants, once a strong flourishing society, have been possessed into mindless creatures, bent on the destruction of life.
- 6
Survival Zombies The Inverted Evolution
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie and Simulation with DeadOS.
Survival Zombies is a bloody chaotic survival first person shooter that pits heavily armed players against humanity's greatest fear - hordes of undead.
- 7
Project Zomboid
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie and Simulation with DeadOS.
Project Zomboid is the ultimate in zombie survival. Alone or in MP: you loot, build, craft, fight, farm and fish in a struggle to survive. A hardcore RPG skillset, a vast map, massively customisable sandbox and a cute tutorial raccoon await the unwary. So how will you die? All it takes is a bite..
- 8
Warbox
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Early Access with DeadOS.
A sandbox game that enables players to watch or take part in a warzone. Players will have access to a variety of tools and features that give them access to customize and change the battlefield however they like.
- 9
Zombie Simulator
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie and Simulation with DeadOS.
A Huge Wave of Zombies Are Coming! Control hundreds of swarming zombies to conquer the entire city!
- 10
RimWorld
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie and Simulation with DeadOS.
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.
- 11
Dwarf Fortress
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie and Simulation with DeadOS.
Build a fortress and try to help your dwarves survive against a deeply generated world. Keep your dwarves happy, grow their community and beware of digging too deeply. The deepest, most intricate simulation of a world that's ever been created.
- 12
WorldBox - God Simulator
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie and Simulation with DeadOS.
WorldBox is the ULTIMATE god simulator and sandbox game. A petri dish for your fantasy civilizations. Create your own world or destroy it using many powers. Watch civilizations grow, form kingdoms, colonize new lands, sail to far continents, wars to ignite, empires to fall and towns to burn!
- 13
Operator Overload
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie with DeadOS.
Operator Overload is a new puzzle game by indie game creator Benn Powell. Solve your way through over a hundred levels of complex combinatoric conundrums using your logical deduction and problem solving skills, and then create your own using the in-game level editor for others to enjoy.