Single-player games like Casualties: Unknown
Below are 8 single-player Steam games similar to Casualties: Unknown, 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 Casualties: Unknown page.
Ranked picks
- 1
Don't Give Up: Not Ready to Die
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Adventure and Simulation with Casualties: Unknown.
How would you react when facing a near-death experience? Despair? Perseverance? ... Maybe sorrow? Face your inner demons while trying to gather resources and keep your body alive in this run survival game as hard as life itself.
- 2
Infectonator: Survivors
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Action and Adventure with Casualties: Unknown.
"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.
- 3
Don't Starve
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Adventure and Simulation with Casualties: Unknown.
Don’t Starve is an uncompromising wilderness survival game full of science and magic. Enter a strange and unexplored world full of strange creatures, dangers, and surprises. Gather resources to craft items and structures that match your survival style.
- 4
Dungeon of the ENDLESS™
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Adventure with Casualties: Unknown.
Dungeon of the ENDLESS™ is a Rogue-Like Dungeon-Defense game, in which the player and their team of heroes must protect the generator of their crashed ship while exploring an ever-expanding dungeon, all while facing waves of monsters and special events as they try to find their way out...
- 5
Deadnaut
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required.
Deadnaut is Screwfly Studios' second game and follow up to cult hit, Zafehouse: Diaries. Deadnauts, so named because they’re unlikely to return, must explore, investigate and fight their way through the derelict ships of dead civilisations. Every mission is unique and no two locations are the same.
- 6
Dead In Vinland
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Adventure and Simulation with Casualties: Unknown.
DEAD IN VINLAND is a survival/management game, mixed with RPG and adventure elements, about a Viking family trying their best to survive on a mysterious island.
- 7
Everything is Crab: The Animal Evolution Roguelite
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Action and Simulation with Casualties: Unknown.
The Animal Evolution Roguelite. Hunt, Flee, Scavenge and Thrive in a living ecosystem. Choose from 125+ Evolutions and Specialisations for unique creature combinations in every run. Adapt to survive the natural curve in order to beat carcinisation... or get Darwin'd trying!
- 8
Void War
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Adventure and Simulation with Casualties: Unknown.
Command an ancient starship and fight your way to the heart of a dying Empire. Fend off attacks from demented cultists, craven space pirates, and xenophobic Imperial soldiers. Discover powerful artifacts and use them to build your ship into a fearsome war engine.