IMHO.

Single-player games like The Hardest Thing

Below are 9 single-player Steam games similar to The Hardest Thing, 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 The Hardest Thing page.

Ranked picks

  1. 1
    The Hardest Thing Ever — Steam game cover

    The Hardest Thing Ever

    Single-player alternative to The Hardest Thing — playable solo, no multiplayer required. Shares Strategy and Indie with The Hardest Thing.

    The Hardest Thing Ever is a first-person game where you will solve puzzles with physics

    2020StrategyIndieAdventure7.99 USDSingle-playerSimilar games →
  2. 2
    ‎My Suika – Kyo’s Fruit Merge — Steam game cover

    ‎My Suika – Kyo’s Fruit Merge

    Single-player alternative to The Hardest Thing — playable solo, no multiplayer required. Shares Strategy and Indie with The Hardest Thing.

    A fun watermelon merge puzzle game! Combine various matching fruits to help Kyo gather watermelons in four different game modes!

    2023StrategyIndieSimulation0.99 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    Quantum Conundrum — Steam game cover

    Quantum Conundrum

    Single-player alternative to The Hardest Thing — playable solo, no multiplayer required. Shares Strategy and Casual with The Hardest Thing.

    Find and rescue your uncle by using his newest invention to work your way through a crazy complex mansion as you switch between dimensions and solve puzzles!

    2012StrategyCasual8.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    The Ball — Steam game cover

    The Ball

    Single-player alternative to The Hardest Thing — playable solo, no multiplayer required. Shares Strategy and Indie with The Hardest Thing.

    As a swashbuckling archaeologist, unlock the mystery of the ancient ruins that have been hidden for centuries and discover a mysterious artifact, a gold and metal shelled Ball.

    2010ActionStrategyIndie9.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    BOULDER DASH 40th Anniversary — Steam game cover

    BOULDER DASH 40th Anniversary

    Single-player alternative to The Hardest Thing — playable solo, no multiplayer required. Shares Strategy and Indie with The Hardest Thing.

    BOULDER DASH® 40th Anniversary – A legend returns! Immerse yourself in 40 years of video game history and experience the classic BOULDER DASH® in an epic anniversary edition!

    2025ActionStrategyIndie19.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Caveman World: Mountains of Unga Boonga — Steam game cover

    Caveman World: Mountains of Unga Boonga

    Single-player alternative to The Hardest Thing — playable solo, no multiplayer required. Shares Indie and Adventure with The Hardest Thing.

    Caveman World: Mountains of Unga Boonga is a retro inspired platformer adventure game set in fantasy prehistoric time. You play as a Caveman, exploring various levels and overcoming physical obstacles. Levels become increasingly more difficult as you encounter enemies, obstacles, traps and more!

    2016IndieAdventureCasual1.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Snake Pass — Steam game cover

    Snake Pass

    Single-player alternative to The Hardest Thing — playable solo, no multiplayer required. Shares Indie and Adventure with The Hardest Thing.

    Slither, coil and climb your way to the top of Haven Tor in this one of a kind physics based, puzzle platform adventure from award winning independent studio Sumo Digital!

    2017IndieAdventureSimulation19.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Tiny Bridge: Ratventure — Steam game cover

    Tiny Bridge: Ratventure

    Single-player alternative to The Hardest Thing — playable solo, no multiplayer required. Shares Strategy and Indie with The Hardest Thing.

    This mind-bending game will challenge you to create complex structures to get your woodland creatures over vast chasms. In a bridge-builder first, you'll guide your creatures and construct your bridges in real time. Use the weight of various creatures to balance your structures as you build them.

    2015StrategyIndieAdventure1.99 USDSingle-playerSimilar games →
  9. 9
    Card Adventures — Steam game cover

    Card Adventures

    Single-player alternative to The Hardest Thing — playable solo, no multiplayer required. Shares Strategy and Indie with The Hardest Thing.

    What will happen if you combine card game with RPG? Heroes, allied characters, enemies with loot, different quest, interesting places and even bosses? Meet the Card adventures!

    2019StrategyIndieAdventure5.99 USDSingle-playerSimilar games →
Single-player games like The Hardest Thing — 9 solo picks · imho.run