Single-player games like Onirism
Below are 14 single-player Steam games similar to Onirism, 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 Onirism page.
Ranked picks
- 1
A Hat in Time
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Indie and Adventure with Onirism.
A Hat in Time is a cute-as-heck 3D platformer featuring a little girl who stitches hats for wicked powers! Freely explore giant worlds and recover Time Pieces to travel to new heights!
- 2
Square Shootout
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action and Indie with Onirism.
Co-op only gameplay up to 4 players. Old school no saves. Silly gameplay, friendly controllers. Remote Play with friends.
- 3
Starboys
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action and Indie with Onirism.
Third-person arena shooter where gravity is a weapon. Run on walls, fight on ceilings, and flip mid-air to outplay friends in fast 1v1–4v4 matches (up to 8). Customize your Starboy and build arenas with the in-game editor.
- 4
Gears 5
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action and Adventure with Onirism.
From one of gaming’s most acclaimed sagas, Gears is bigger than ever. With all-out war descending, Kait Diaz breaks away to uncover her connection to the enemy and discovers the true danger to Sera – herself.
- 5
Intraversal : Lifeless
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action and Indie with Onirism.
Trapped in the Philippine slums with zero cash, surrounded by saints and sinners. Struggle for pennies or take a dark path to wealth? INTRAVERSAL: LIFELESS is an open-world survival game. Scavenge, build your arsenal, and face the ultimate question: will you survive when total chaos erupts?
- 6
Catnight
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action and Indie with Onirism.
😼Being a cat is sometimes so frustrating! Just grab a gun and shoot some furballs. Catnight is an online shooting multiplayer game with many surprising modes. No game will ever be the same. Team up or not it's your choice. Just smashcat your opponents!
- 7
Bulletproof
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action and Indie with Onirism.
Change the art, change the history, change the rules of the game and let your imagination soar with the 250 Worlds and 50 Modes of Bulletproof... (Shooter, RTS, MMORPG, Arcade, Martial arts, Sports, Horror, Racing, War... There is no limit to fun)
- 8
Frogun
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action and Indie with Onirism.
Join Renata as she adventures across a world of mystical ruins with the titular FROGUN! Frogun is an old-school platformer with the soul of the PS1/N64 era, in which your frog-shaped grappling hook is a your best friend!
- 9
Ratchet & Clank: Rift Apart
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action and Adventure with Onirism.
Blast your way through an interdimensional adventure with Ratchet and Clank – now on PC! Help them take on an evil emperor from another reality as you jump between action-packed worlds and beyond at hyper-speed!
- 10
Unreal Tournament: Game of the Year Edition
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action with Onirism.
Unreal Tournament is the original King of the Hill in the frag-or-be-fragged multiplayer gaming world. As the undisputed 1999 Game of the Year, Unreal Tournament grabbed the first person shooter genre by the soiled seat of its pants and knocked it around the room with its never-before-seen graphics, brutal edge-of-your-seat gameplay and...
- 11
TimeSplit
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action and Adventure with Onirism.
TimeSplit is a fast-paced cartoon FPS with creative time powers. Bend, pause, and rewind time to outsmart foes, dodge fire, and control battles. Use a diverse arsenal of weapons and abilities where every fight becomes a puzzle of timing and strategy.
- 12
Tomb Raider Game of the Year
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action and Adventure with Onirism.
Tomb Raider explores the intense origin story of Lara Croft and her ascent from a young woman to a hardened survivor.
- 13
Quake III Arena
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action with Onirism.
The greatest warriors of all time and space have been summoned to battle for the amusement of an ancient alien race. Wield a variety of guns and power-ups as you fight for glory against ruthless combatants in this fast-paced single-player and multiplayer FPS.
- 14
Mega Man Legacy Collection
Single-player alternative to Onirism — playable solo, no multiplayer required. Shares Action with Onirism.
Mega Man Legacy Collection is a celebration of the 8-bit history of Capcom’s iconic Blue Bomber featuring faithful reproductions of the series’ origins with the original six Mega Man games.