IMHO.

Single-player games like Monochrome Rainbow

Below are 8 single-player Steam games similar to Monochrome Rainbow, 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 Monochrome Rainbow page.

Ranked picks

  1. 1
    Ink & Void — Steam game cover

    Ink & Void

    Single-player alternative to Monochrome Rainbow — playable solo, no multiplayer required. Shares Strategy with Monochrome Rainbow.

    A storybook tower defense where stationery knights fight the Void. Deploy pencil swordsmen, fountain pen mages, and eraser monks across four chapters. Evolve units via class changes and build your deck with cards earned each stage. Languages: Japanese / English / Chinese

    2026StrategyIndieCasual1.99 USDSingle-playerSimilar games →
  2. 2
    核心防线 core defense line — Steam game cover

    核心防线 core defense line

    Single-player alternative to Monochrome Rainbow — playable solo, no multiplayer required. Shares Strategy with Monochrome Rainbow.

    You are a cloud operator. In the game, to protect the core and resist the continuous virus invasions, you build defenses, construct cards, install creatively designed plugins that provide you with various attack methods, repair external nodes, and at the same time offer you more convenient defense.

    2026StrategyIndieCasualSingle-playerSimilar games →
  3. 3
    Tavern Defense — Steam game cover

    Tavern Defense

    Single-player alternative to Monochrome Rainbow — playable solo, no multiplayer required. Shares Strategy with Monochrome Rainbow.

    Tavern Defense is a Tower Defense + Roguelike Deckbuilder game where you build your deck of cards, carve your own paths for monsters, and create magnificent synergies to win the game.

    StrategySingle-playerSimilar games →
  4. 4
    Imaginytes — Steam game cover

    Imaginytes

    Single-player alternative to Monochrome Rainbow — playable solo, no multiplayer required. Shares Strategy with Monochrome Rainbow.

    Tower defense meets roguelite deckbuilder! Collect, summon and evolve your Imaginyte creatures, and use them to create intricate mazes to defeat the nightmares.

    2025StrategyIndieAdventure7.49 USDSingle-playerSimilar games →
  5. 5
    Mr Magpie's Harmless Card Game — Steam game cover

    Mr Magpie's Harmless Card Game

    Single-player alternative to Monochrome Rainbow — playable solo, no multiplayer required. Shares Strategy with Monochrome Rainbow.

    A surreal corporate horror deckbuilder where you gamble your life for cash, dodge murderous JERRY cards, and “maximise synergies” to climb the company ladder in Mr Magpie’s office nightmare.

    StrategySingle-playerSimilar games →
  6. 6
    INFERIUS — Steam game cover

    INFERIUS

    Single-player alternative to Monochrome Rainbow — playable solo, no multiplayer required. Shares Strategy with Monochrome Rainbow.

    Descend through nine dominions of Hell in a first-person horror roguelike deckbuilder. Wield Major Arcana tarot cards, upgrade your deck between deaths, use your lantern to survive the dark, and defeat each ruler before your sanity breaks.

    2027StrategyIndieAdventureSingle-playerSimilar games →
  7. 7
    KindFolx — Steam game cover

    KindFolx

    Single-player alternative to Monochrome Rainbow — playable solo, no multiplayer required.

    KindFolx is a fast-paced deckbuilding roguelike where real-time action meets tactical card combat. Play as one of three monsterfolk heroes and battle through randomized encounters, evolving your deck and strategy to take down a ruthless tyrant.

    2025ActionIndieAdventure14.99 USDSingle-playerSimilar games →
  8. 8
    Ledgermain — Steam game cover

    Ledgermain

    Single-player alternative to Monochrome Rainbow — playable solo, no multiplayer required. Shares Strategy with Monochrome Rainbow.

    A roguelite deckbuilder about one thing: watching the numbers go up. Stack cards, chain jokers, and stamp your deck into an engine that snowballs from thousands into the billions.

    StrategyIndieCasualSingle-playerSimilar games →