Single-player games like Mini Island: Cosmos
Below are 16 single-player Steam games similar to Mini Island: 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 Mini Island: Cosmos page.
Ranked picks
- 1

Mini Island: Autumn
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Mini Island: Autumn is a one small hold & Gun, boss Rush mini-game of Casual difficulty!
- 2

Sunshower
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Sunshower is a colorful, casual arcade action game that follows a robot's survival in a rain storm! Use the plant installed on your head to reach for the sky as you achieve high scores, unlock secrets, and stop the rain from washing away the world.
- 3

Mixx Island: Remix Vol. 2
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Mixx Island: Remix Vol. 2 is a one small hold & Gun, boss Rush mini-game of Casual difficulty! This beautiful place was built only for simple fun! Choose the character and difficulty level that best suits you and enjoy a short, simple but colorful boss rush minigame!
- 4

Mini Island: Winter
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Mini Island: Winter is a one small hold & Gun, boss Rush mini-game of Casual difficulty!
- 5

Pandea Stones
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
In the game you play the Pandean hero, Tin, which has a mission to save his planet from alien threat. You will be facing many obstacles thru different environments, where you will meet angry robots and funny looking animals.
- 6

Wizard Shrimp
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Wizard Shrimp™ is a bullet-hell roguelite game where you play as a Shrimp who is inexplicably also a Wizard?! Battle your way out of a slimy swamp, escape amethyst caves, and climb the Mushroom Wizard's Tower to become the most powerful Shrimp this world has ever seen!
- 7

ALIEN WAR 2 DOGFIGHT
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
The best shooting game with various perspectives
- 8

Brave Heroes
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Kill thousands of creatures and try to complete four seasons. Brave Heroes is a casual action rogue-lite game about using both environment and magical powers to survive against thousands of creatures that only aim to kill you.
- 9

Red Island
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Red Island is a one small hold & Gun, boss Rush mini-game of Casual difficulty.
- 10

Snow Island
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Snow Island is a one small hold & Gun, boss Rush mini-game of Casual difficulty.
- 11

Mini Island
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Mini Island is a one small hold & Gun, boss Rush mini-game of Casual difficulty.
- 12

Mini Island: Night
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Mini Island: Night is a one small hold & Gun, boss Rush mini-game of Casual difficulty.
- 13

Rain Island
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Rain Island is a one small hold & Gun, boss Rush mini-game of Casual difficulty.
- 14

Pink Island
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Pink Island is a one small hold & Gun, boss Rush mini-game of Casual difficulty.
- 15

Day Island
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Day Island is a one small hold & Gun, boss Rush mini-game of Casual difficulty.
- 16

Star Island
Single-player alternative to Mini Island: Cosmos — playable solo, no multiplayer required. Shares Action and Indie with Mini Island: Cosmos.
Star Island is a one small hold & Gun, boss Rush mini-game of Casual difficulty.