Single-player games like DeadOS
Below are 16 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
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!
- 2
Rising Dead
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie and Simulation with DeadOS.
Survive a zombie-infested mall for 3 days. Fight, scavenge, rescue, and customize your character in this dynamic game.
- 3
Parametric Creature: Lab
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Simulation with DeadOS.
Explore and create parametric creatures
- 4
Defi's Devotion
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie with DeadOS.
Become the plague in an asymmetrical player verses simulation battle for immortality. Infect populations, collapse economies, and harvest the dead to fuel your path to lichhood; only if you can conquer an adaptive world fighting to survive.
- 5
30 days to survive
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie and Simulation with DeadOS.
"30 days to survive" - the game is going day, in a world where there is a zombie Apocalypse! The protagonist has to survive 30 days on a randomly generated map full of dead.
- 6
Infectonator: Survivors
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie with DeadOS.
"Infectonator : Survivors" is a Randomized Permadeath Survival Simulator that combines RTS, Tower Defense, Roguelike, and Management-Simulation gameplay. The goal is to lead a group of survivors in a struggle to stay alive and find rescue in a zombie apocalyptic world.
- 7
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!
- 8
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.
- 9
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..
- 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
Left 4 Dead
Single-player alternative to DeadOS — playable solo, no multiplayer required.
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.
- 12
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.
- 13
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!
- 14
Outbreak
Single-player alternative to DeadOS — playable solo, no multiplayer required. Shares Indie with DeadOS.
Race against the clock and battle the undead in this co-op survival horror nightmare.
- 15
Dying Light
Single-player alternative to DeadOS — playable solo, no multiplayer required.
First-person action survival game set in a post-apocalyptic open world overrun by flesh-hungry zombies. Roam a city devastated by a mysterious virus epidemic. Scavenge for supplies, craft weapons, and face hordes of the infected.
- 16
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.