Single-player games like Spheriums
Below are 9 single-player Steam games similar to Spheriums, 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 Spheriums page.
Ranked picks
- 1

Sociopat
Single-player alternative to Spheriums — playable solo, no multiplayer required. Shares Action and Indie with Spheriums.
Sociopat is an absurd comedy driven game that combines point and click adventure with action packed FPS game. Play in a role of an anti-hero and do some mischievous acts, NOW!
- 2

Not Enough Space
Single-player alternative to Spheriums — playable solo, no multiplayer required. Shares Action and Indie with Spheriums.
Land with your friends on the surface of various planets, gather resources, create items and buildings, defeat enemies and move to other planets to discover their secrets and secrets
- 3

DarkenDerek The last Fallen
Single-player alternative to Spheriums — playable solo, no multiplayer required. Shares Action and Indie with Spheriums.
Play the role of an insane being apish looking and face a new threat. Arm yourself to the teeth and prevent aliens to kidnap our beloved woman. Kick back invaders to their own galaxy or kill them all! Will you be able to save all girls bringing peace again in Club City?
- 4

SENTRY
Single-player alternative to Spheriums — playable solo, no multiplayer required. Shares Action and Indie with Spheriums.
SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.
- 5

Exophobia
Single-player alternative to Spheriums — playable solo, no multiplayer required. Shares Action and Indie with Spheriums.
Explore and fight your way through a crashed human spaceship infested with relentless hordes of aliens as you become more powerful with exciting weapon upgrades and powerups in this retro inspired first-person shooter.
- 6

Kill The Topulus
Single-player alternative to Spheriums — playable solo, no multiplayer required. Shares Action and Indie with Spheriums.
Kill The Topulus, shoot with timing and skill to survive! Complete unique challenges, climb the global leaderboards and prove you are the Master of Topulus!
- 7

The Santa Paradox
Single-player alternative to Spheriums — playable solo, no multiplayer required. Shares Indie and Adventure with Spheriums.
Listen, we've got to find out the meaning of Christmas and YOU are just the one to do it! The big man himself asked for you, come along with me on this adventure, don't forget the cookies!
- 8

The Heights
Single-player alternative to Spheriums — playable solo, no multiplayer required. Shares Action and Adventure with Spheriums.
The heights is a story based first-person single-player action puzzle game. Shoot and climb to the top of the skyscraper whilst avoiding assured death. Solve puzzles to proceed to the next floor. Destroy all research and eliminate the CEO to save the future from doom.
- 9

Myst
Single-player alternative to Spheriums — playable solo, no multiplayer required. Shares Indie and Adventure with Spheriums.
Welcome to Myst: a starkly beautiful island, eerily tinged with mystery and shrouded in intrigue. Built from the ground up to play in 2D & VR, explore Myst in a whole new dimension! Journey to the Ages, unravel puzzles, and be a part of the surrealistic adventure that will become your own.