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

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
- 2

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.
- 3

AI Slop TCG
Single-player alternative to Monochrome Rainbow — playable solo, no multiplayer required. Shares Strategy with Monochrome Rainbow.
A deckbuilding roguelike where a cheating AI drags you through a digital wasteland of twisted creatures. Build your deck, survive the chaos, and win a game that doesn’t want to be fair.
- 4

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.
- 5

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.
- 6

Hungry Ghosts
Single-player alternative to Monochrome Rainbow — playable solo, no multiplayer required. Shares Strategy with Monochrome Rainbow.
Hungry Ghosts is a wild tower defense roguelike where you exorcise hungry ghosts with magical desserts and drinks! Play as a fearless witch and her various companions with unique powers, upgrade your dishes, and unleash powerful synergies to survive haunted waves and defeat bosses.
- 7

Oaks vs Orcs
Single-player alternative to Monochrome Rainbow — playable solo, no multiplayer required. Shares Strategy with Monochrome Rainbow.
Build a forest kingdom, bend the river through your strongest tiles, and stack broken combinations in this roguelike strategy autobattler. Adapt to the seasons, then watch your army crush waves of lumber-hungry orcs.
- 8

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.