Single-player games like Black Maou & Rainbow Kingdom
Below are 9 single-player Steam games similar to Black Maou & Rainbow Kingdom, 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 Black Maou & Rainbow Kingdom page.
Ranked picks
- 1

Castle Cardians
Single-player alternative to Black Maou & Rainbow Kingdom — playable solo, no multiplayer required. Shares Strategy and Indie with Black Maou & Rainbow Kingdom.
Castle Cardians fused card games,roguelike and real time colony defense together. Build your powerful deck, defend the castle and beat invaders.
- 2

Demonic Defense
Single-player alternative to Black Maou & Rainbow Kingdom — playable solo, no multiplayer required. Shares Action and Strategy with Black Maou & Rainbow Kingdom.
Guard your campfire through the night and feed your rivals' rifts with monsters. A multiplayer tower-defense survival hybrid where deck building, base building, and dueling economies decide who survives and who freezes.
- 3

Woods Of War
Single-player alternative to Black Maou & Rainbow Kingdom — playable solo, no multiplayer required. Shares Action and Strategy with Black Maou & Rainbow Kingdom.
Build your deck in battle to turn your tree into an impenetrable fortress against the onslaught of increasingly powerful enemies.
- 4

Cards & Cannons
Single-player alternative to Black Maou & Rainbow Kingdom — playable solo, no multiplayer required. Shares Action and Strategy with Black Maou & Rainbow Kingdom.
Build your own realm and turn every path into a devious trap in this roguelite tower defense deckbuilder! Crush endless enemy hordes with mighty spells and crazy builds in unique runs. Defeat powerful bosses and conquer world after world in this colorful medieval madness!
- 5

All-Front Assault
Single-player alternative to Black Maou & Rainbow Kingdom — playable solo, no multiplayer required. Shares Strategy and Indie with Black Maou & Rainbow Kingdom.
When the sky is filled with warplanes, it's time to make these alien bugs tremble! Commander, welcome to Planet Thernas. We look forward to defending our planetary outpost under your command.
- 6

Gods and Kings
Single-player alternative to Black Maou & Rainbow Kingdom — playable solo, no multiplayer required. Shares Strategy with Black Maou & Rainbow Kingdom.
A game that combines real-time strategy, card collection and role-playing. It's based on Greek mythology. You can play as heroes who can manipulate the power of Rune, summon the army and cast magic to defeat enemies, challenge or defend the authority of the Gods.
- 7

Castellan
Single-player alternative to Black Maou & Rainbow Kingdom — playable solo, no multiplayer required. Shares Action and Strategy with Black Maou & Rainbow Kingdom.
A real-time roguelite castle defense made by a solo developer. Shoot from your castle, drag soldier cards onto the field, and cast spells to hold the line. Between runs, open chests to recruit new units and spend mastery on a huge upgrade tree, then push the horde back chapter by chapter.
- 8

Ancient Sacrifice
Single-player alternative to Black Maou & Rainbow Kingdom — playable solo, no multiplayer required. Shares Strategy and Indie with Black Maou & Rainbow Kingdom.
RTS x Deck-Building Card Battle!An RTS-style card game that you can easily play with a deck of 10 cards and simple rules.
- 9

Mega Hero
Single-player alternative to Black Maou & Rainbow Kingdom — playable solo, no multiplayer required. Shares Action and Indie with Black Maou & Rainbow Kingdom.
Battle giant girls created by aliens. Break their clothes and have physical collisions! Third-person shooting & third-person fighting gameplay. Multiple weapons & skills, interactive H content.