Single-player games like IINTWO
Below are 12 single-player Steam games similar to IINTWO, 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 IINTWO page.
Ranked picks
- 1

BakuMari
Single-player alternative to IINTWO — playable solo, no multiplayer required. Shares Indie and Casual with IINTWO.
Crazy game with the building of towers in the most incredible situations. Ex-villain Explosion tries to redeem herself and helps a mysterious cubie.
- 2

Waifu Bubble
Single-player alternative to IINTWO — playable solo, no multiplayer required. Shares Indie and Casual with IINTWO.
Dive into a charming underwater puzzle adventure! Play solo or with a friend, control adorable crabs, and guide a trapped waifu through clever two-layer levels. Solve puzzles, work together, and help her reach the surface!
- 3

Restitched
Single-player alternative to IINTWO — playable solo, no multiplayer required. Shares Indie and Casual with IINTWO.
Join Stuffy on a charming platforming adventure as they "restitch" unraveled communities. Unleash your creativity with a robust 2.5D level editor, play dress up with a powerful mix-and-match Wardrobe, and share your creations via Steam Workshop!
- 4

IIN
Single-player alternative to IINTWO — playable solo, no multiplayer required. Shares Indie and Casual with IINTWO.
IIN is a puzzle platformer where you are a soul that controls cubes, overcoming challenges to bring them to the portal which is their goal.
- 5

Cubie
Single-player alternative to IINTWO — playable solo, no multiplayer required. Shares Indie with IINTWO.
CUBIE is a minimalist puzzle platformer where you control gravity. Each side of the cube offers unique physics based on how you enter it. The world remains the same – only your perspective changes. Can you solve spatial puzzles in a labyrinth where "up" is just a relative term?
- 6

Puzzle Cottage
Single-player alternative to IINTWO — playable solo, no multiplayer required. Shares Indie and Casual with IINTWO.
A cozy cottage of 14 hand-crafted logic puzzles, fresh every day — solved by pure deduction, never luck. Then pull up a second chair for five hot-seat games to play with someone across the table. Daily streaks, a world that grows as you play, 27 languages.
- 7

Handsy
Single-player alternative to IINTWO — playable solo, no multiplayer required. Shares Indie and Casual with IINTWO.
Your hands are the controller. Wave at your webcam, pinch to grab blocks, and stack a tower tall enough to carry the key to the lock. Solve physics puzzles across 100+ levels of wood, stone, glass, rope, and hope—solo or in online co-op, one hand each. Webcam required.
- 8

Wirm
Single-player alternative to IINTWO — playable solo, no multiplayer required. Shares Indie and Casual with IINTWO.
Take a worm on a tiny adventure through this delightfully wiggly physics platformer :)
- 9

Gaucho and the Grassland
Single-player alternative to IINTWO — playable solo, no multiplayer required. Shares Indie and Casual with IINTWO.
LIVE like a LATIN COWBOY as you EXPLORE, HELP others, and bring HARMONY between HUMANS and MYSTICAL BEINGS in a RELAXING COZY ADVENTURE.
- 10

Goroons
Single-player alternative to IINTWO — playable solo, no multiplayer required. Shares Indie and Casual with IINTWO.
GOROONS is a teamwork-based adventure where you have to combine your unique skills and overcome tough-as-nails puzzle challenges.
- 11

Outland Rapture
Single-player alternative to IINTWO — playable solo, no multiplayer required. Shares Indie with IINTWO.
A stealth coop story driven game that mix lost vikings mechanics with the mood of inside. Three strangers wake up in a mysterious place and working together without being noticed is the only way to survive all the dangers and return home.
- 12

BRAVO, GASPAR!
Single-player alternative to IINTWO — playable solo, no multiplayer required.
"SURVIVE my SADISTIC SHOW. An ACTION ROGUELIKE where your performance with COLLECTIBLE CREATURES serves only to feed me. On my stage, the rule is simple: ENTERTAIN OR DIE!"