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
Galacide
Single-player alternative to COSMOS — playable solo, no multiplayer required. Shares Action and Indie with COSMOS.
Command destructive spaceships to obliterate hordes of enemy vessels, while quickly solving puzzles to weave through networks of vibrantly colorful, adversarial machines!
- 2
Aeon Drive
Single-player alternative to COSMOS — playable solo, no multiplayer required. Shares Action and Indie with COSMOS.
Rush through the cyberpunk landscapes of Neo Barcelona in Aeon Drive, an action-platformer with a speedrunning twist! Whether solo or in up to 4 player co-op, sprint and dash through many areas of the neon-infused city - and use your time and space-bending abilities to get ahead.
- 3
Jamestown
Single-player alternative to COSMOS — playable solo, no multiplayer required. Shares Action and Indie with COSMOS.
Jamestown: Legend Of The Lost Colony is a neo-classical top-down shooter for up to 4 players, set on 17th-century British Colonial Mars. It features all the intensity, depth, and lovingly handcrafted pixels of a classic arcade shooter, with a modern twist: deeply-integrated cooperative gameplay.
- 4
Gravity Heroes
Single-player alternative to COSMOS — playable solo, no multiplayer required. Shares Action and Indie with COSMOS.
Gravity Heroes is a fast paced, chaotically beautiful 2D platform shooter, fuelled by retro arcade nostalgia with an electrifying soundtrack and popping pixel art style. Enjoy an action-packed, gravity-shifting solo campaign, or local multiplayer madness for up to four friends.
- 5
Vortex Attack: ボルテックスアタック
Single-player alternative to COSMOS — playable solo, no multiplayer required. Shares Action and Indie with COSMOS.
Vortex Attack is a frenetic arcade space shooter featuring worldwide tournaments and an intense local multiplayer mode.A worthy successor to Galaga for the XXI century.WARNING: Highly addictive.
- 6
Slime-san: Superslime Edition
Single-player alternative to COSMOS — playable solo, no multiplayer required. Shares Action and Indie with COSMOS.
Slime-san was minding his own business when suddenly… A giant worm appeared and gobbled him up! Deep within the worm’s belly, Slime-san has to face a decision: Be digested by the incoming wall of stomach acid... Or jump, slide and slime his way through the worm and back out its mouth!
- 7
Bloody Trapland 2: Curiosity
Single-player alternative to COSMOS — playable solo, no multiplayer required. Shares Action and Indie with COSMOS.
Take on the hard yet fair world of Bloody Trapland. Jump, slide, dash and dodge your way through the many deadly levels. Find secrets, solve puzzles, unlock mysteries and unravel the story. Go at it alone or bring your friends along for a co-op experience like no other. 1-4 players online and/or splitscreen.
- 8
N++ (NPLUSPLUS)
Single-player alternative to COSMOS — playable solo, no multiplayer required. Shares Action with COSMOS.
N++ is a fast-paced, momentum-based platformer about darting around obstacles, narrowly evading enemies and collecting gold in a beautiful minimalist landscape.