IMHO.

Single-player games like Nightmare Mines

Below are 8 single-player Steam games similar to Nightmare Mines, 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 Nightmare Mines page.

Ranked picks

  1. 1
    Gigachess — Steam game cover

    Gigachess

    Single-player alternative to Nightmare Mines — playable solo, no multiplayer required. Shares Strategy and Indie with Nightmare Mines.

    Gigachess is a hero defense puzzler on a chess board. Command your party of Knights, Rooks & Bishops against the relentless Pawn onslaught!

    2015StrategyIndieCasual3.99 USDSingle-playerSimilar games →
  2. 2
    LoBlocks — Steam game cover

    LoBlocks

    Single-player alternative to Nightmare Mines — playable solo, no multiplayer required. Shares Strategy and Casual with Nightmare Mines.

    LoBlocks is a puzzle game, where the player must destroy all blocks to go to the next level enjoying a relaxing atmosphere with LoFi musics. The game also has an arcade mode with ranking.

    2021StrategyCasual2.99 USDSingle-playerSimilar games →
  3. 3
    Hexa's Gone — Steam game cover

    Hexa's Gone

    Single-player alternative to Nightmare Mines — playable solo, no multiplayer required. Shares Strategy and Indie with Nightmare Mines.

    The Secret Hexa has vanished. Ask the right questions, stay strategic in your answers. Your goal will be to gather the clues from each player. By combining them, you will likely be the first to find the Hexa.

    2026StrategyIndieCasual7.99 USDSingle-playerSimilar games →
  4. 4
    Holoplanet Architect — Steam game cover

    Holoplanet Architect

    Single-player alternative to Nightmare Mines — playable solo, no multiplayer required. Shares Strategy and Casual with Nightmare Mines.

    Try your hand as holoplanet architect! Place tetris-like pieces on the 3D grid of a planet hologram in a relaxed, lo-fi atmosphere to unlock new biomes and increase your highscore.

    StrategyCasualSingle-playerSimilar games →
  5. 5
    SudoKube — Steam game cover

    SudoKube

    Single-player alternative to Nightmare Mines — playable solo, no multiplayer required. Shares Strategy and Indie with Nightmare Mines.

    An enhanced sudoku experience, 6 times more fun

    2022StrategyIndieCasual1.99 USDSingle-playerSimilar games →
  6. 6
    Hextones — Steam game cover

    Hextones

    Single-player alternative to Nightmare Mines — playable solo, no multiplayer required. Shares Strategy and Indie with Nightmare Mines.

    Connect the Hextones by color or symbol and jump light-years in the Spacetime to be the great cosmic explorer. A challenging matchup puzzle game with a sci-fi mood.

    2021StrategyIndieCasual0.99 USDSingle-playerSimilar games →
  7. 7
    Diecast — Steam game cover

    Diecast

    Single-player alternative to Nightmare Mines — playable solo, no multiplayer required. Shares Strategy and Indie with Nightmare Mines.

    Welcome to the dice roguelite. Stuff your bag with wild dice and pins, chain ridiculous scoring combos, and build a point engine to conquer ever-escalating targets. This ain't your Grandma's dice game!

    2026StrategyIndieCasualSingle-playerSimilar games →
  8. 8
    Hextones: Spacetime — Steam game cover

    Hextones: Spacetime

    Single-player alternative to Nightmare Mines — playable solo, no multiplayer required. Shares Strategy and Casual with Nightmare Mines.

    Connect the Hextones and jump through Spacetime! An even more challenging matchup puzzle with time mechanics. Explore three new Hexgrids through three game modes, including a Hardcore for those with a strong heart and a Relax mode with cool music!> Play also with Tilt Five™

    2021StrategyCasual1.99 USDSingle-playerSimilar games →