Single-player games like Cosmos
Below are 8 single-player Steam games similar to Cosmos, 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 Cosmos page.
Ranked picks
- 1
Nuclear Throne
Single-player alternative to Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Cosmos.
Nuclear Throne is a post-apocalyptic roguelike-like top-down shooter. Not 'the final hope of humanity' post-apocalyptic, but 'humanity is extinct and mutants and monsters now roam the world' post-apocalyptic. Can you reach the Nuclear Throne?
- 2
Peace Data
Single-player alternative to Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Cosmos.
Peace Data — hard "Roguelike" game, in which you have to play for Bitard, saving Rusland from the tyranny of the authorities that destroyed the opposition and led the country to ruin, making slaves of citizens.
- 3
One Step From Eden
Single-player alternative to Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Cosmos.
Build a powerful deck, cast spells on the fly, battle evolving enemies, find game-changing artifacts, make friends or make enemies, just make it to Eden.
- 4
Cozy Space Survivors
Single-player alternative to Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Cosmos.
A cozy time survival roguelite in space. You steer the shippy while the shooting happens automatically. Meet cute NPCs, solve small quests, and fight quirky enemies with satisfying weapons. A shorter experience for people who don't have much time but love playing (and finishing) games.
- 5
Doomed to Hell
Single-player alternative to Cosmos — playable solo, no multiplayer required. Shares Action and Adventure with Cosmos.
Doomed to Hell is a roguelike-like top-down shooter where you play as Rose, a human in hell who will need to fight all of its monsters in waves of enemies, defeat bosses, and get new weapons to earn back his life on earth.
- 6
Asgard's Fall — Viking Survivors
Single-player alternative to Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Cosmos.
Embark on an epic saga in Asgard's Fall, a norse Survivors-like Roguelite. Fight your way through hordes of creatures and let the gods feel your relentless wrath. How will your saga unfold?
- 7
Tiny Rogues
Single-player alternative to Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Cosmos.
Tiny Rogues is a challenging fantasy rogue-lite bullet-hell dungeon crawler with rpg elements. Build a new unique character each run and fight one monster-infested room after another! Discover unique weapons, collect magical items and level up to become more and more powerful!
- 8
Hell is Other Demons
Single-player alternative to Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Cosmos.
Hell is Other Demons is an action-platform shooter, with Roguelite elements. Explore a sprawling, hand-crafted world full of demons, insanely over-the-top boss fights, and a heavy synthwave soundtrack.