Single-player games like F.U.N
Below are 8 single-player Steam games similar to F.U.N, 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 F.U.N page.
Ranked picks
- 1

Underwater DuO
Single-player alternative to F.U.N — playable solo, no multiplayer required. Shares Action and Indie with F.U.N.
In Underwater Duo, control a smashing turtle with your left hand and a blasting jellyfish with your right! Fight off waves of fierce fish, grow stronger, and see if your two hands can conquer the deep… or team up with a perfectly in-sync partner.
- 2

Slay Goblins
Single-player alternative to F.U.N — playable solo, no multiplayer required. Shares Action and Indie with F.U.N.
Slay Goblins is an arena roguelite where you play a knight fighting off hordes of goblins. Choose from a variety of perks, weapons and items to create unique builds and defend your castle.
- 3

Spaceborn Awakening
Single-player alternative to F.U.N — playable solo, no multiplayer required. Shares Action and Indie with F.U.N.
Start as a mortal. End as a god. Carve through corrupted hordes, evolve your arsenal and unlock cosmic powers that clear the screen with a wave of your hand. A narrative-driven bullet-heaven roguelite.
- 4

Irradiant Skies
Single-player alternative to F.U.N — playable solo, no multiplayer required. Shares Action and Indie with F.U.N.
Irradiant Skies is an arcade roguelite blending brick-breaking and bullet-parrying combat. Reflect enemy attacks, chain powerful upgrades, and master unique ships as you ascend through waves of enemies.
- 5

Homesider Survivors
Single-player alternative to F.U.N — playable solo, no multiplayer required. Shares Action and Indie with F.U.N.
HOMESIDER SURVIVORS is a single player survivor-like auto-shooter. You find yourself far from home against countless hordes of aliens...but they're the ones who have to survive, because they kidnapped the wrong guy. Kill, die, level up, and try again until you get home.
- 6

Star Scrap
Single-player alternative to F.U.N — playable solo, no multiplayer required. Shares Action and Indie with F.U.N.
A broke bounty hunter. A sarcastic robot. 1,000,000 credit debt. Star Scrap is a chaotic twin stick space roguelite. Blast through increasingly difficult waves of enemies to pay it off.
- 7

Delusional
Single-player alternative to F.U.N — playable solo, no multiplayer required. Shares Action and Indie with F.U.N.
Delusional is a chaotic top-down roguelike shooter where you battle absurd enemies with hundreds of ridiculous weapons, all in a desperate bid to defeat the eccentric artiste who created you.
- 8

Soliton Burst
Single-player alternative to F.U.N — playable solo, no multiplayer required. Shares Action and Indie with F.U.N.
An arena shooter where the arena keeps folding into 12 shapes of space: Torus, Möbius, Klein bottle, and more. 90+ weapons that curve along the geometry. 6+ characters that each play differently. Hundreds of enemies stream at you the whole time. Push the limits of the universe.