IMHO.

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. 1
    BakuMari — Steam game cover

    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.

    IndieCasualSingle-playerSimilar games →
  2. 2
    Waifu Bubble — Steam game cover

    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!

    2027IndieCasualSingle-playerSimilar games →
  3. 3
    Restitched — Steam game cover

    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!

    IndieAdventureCasualSingle-playerSimilar games →
  4. 4
    IIN — Steam game cover

    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.

    2018IndieCasual2.99 USDSingle-playerSimilar games →
  5. 5
    Cubie — Steam game cover

    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?

    IndieSingle-playerSimilar games →
  6. 6
    Puzzle Cottage — Steam game cover

    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.

    2026IndieCasual6.99 USDSingle-playerSimilar games →
  7. 7
    Handsy — Steam game cover

    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.

    IndieSimulationCasualSingle-playerSimilar games →
  8. 8
    Wirm — Steam game cover

    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 :)

    2025IndieAdventureSimulation6.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Gaucho and the Grassland — Steam game cover

    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.

    2025IndieAdventureSimulation19.99 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    Goroons — Steam game cover

    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.

    2018IndieCasual2.99 USDSingle-playerSimilar games →
  11. 11
    Outland Rapture — Steam game cover

    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.

    ActionIndieAdventureSingle-playerSimilar games →
  12. 12
    BRAVO, GASPAR! — Steam game cover

    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!"

    ActionSingle-playerSimilar games →