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 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.
- 2

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.
- 3

NEO Scavenger
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required.
NEO Scavenger is a game where you must survive in the wasteland long enough to figure out who you are. Each turn, you must decide where to go, how to scavenge for supplies, and how to deal with anything and anyone you encounter.
- 4

Teleglitch: Die More Edition
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Action with Casualties: Unknown.
In a cold, dark future dominated by mega-corporations, a small lonely planet on the edge of habitable space is the site of a shadowy research facility specializing in necrotic tissue reactivation. You are a scientist who has suddenly awoken to the realization that you are the lone survivor.
- 5

Dunjungle
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Action and Adventure with Casualties: Unknown.
A 2d action-packed roguelite about a monkey hero protecting the jungle from the rise of a corruptive power. Explore ever-changing dungeons, fight weird enemies and gear up with lots of weapons and relics you can combine for a new experience every run. Explore, fight, die, and repeat!
- 6

Core Keeper
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Action and Adventure with Casualties: Unknown.
Explore a vast cavern of creatures, relics and resources in a mining sandbox adventure for 1-8 players. Mine, build, fight, craft and farm to unravel the mystery of the ancient Core.
- 7

Satisfactory
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Adventure and Simulation with Casualties: Unknown.
Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!
- 8

Forager
Single-player alternative to Casualties: Unknown — playable solo, no multiplayer required. Shares Action and Adventure with Casualties: Unknown.
The highly popular and quirky "idle game that you want to actively keep playing". Explore, craft, gather & manage resources, find secrets and build your base out of nothing! Buy land to explore and expand!