IMHO.

Single-player games like Castle Morihisa

Below are 11 single-player Steam games similar to Castle Morihisa, 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 Castle Morihisa page.

Ranked picks

  1. 1
    Roguebook — Steam game cover

    Roguebook

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

    Embrace the challenge of a roguelike deckbuilder with unique mechanics from the developers of Faeria and Richard Garfield, creator of Magic: The Gathering™. Build a team of two heroes, unleash powerful combos and defeat the legends of the Roguebook!

    2021StrategyIndieAdventure24.99 USDDeck PlayableSingle-playerSimilar games →
  2. 2
    Indies' Lies — Steam game cover

    Indies' Lies

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

    A roguelike deck-building game where you craft a deck, spark talents, discover runes, and assemble your team with partners' cards! Play unique stories for every character and explore a world caught in the clash of gods. New Puppeteer DLC just released!

    2023StrategyRPG4.49 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    Pirates Outlaws — Steam game cover

    Pirates Outlaws

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

    Pirates Outlaws is a roguelike card game in which you navigate dangerous seas and challenge their masters. Your expedition will be full of ambushes and will not be easy. Build your deck and combos to become a reputed pirate.

    2020StrategyIndieAdventure19.99 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    SpellRogue — Steam game cover

    SpellRogue

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

    SpellRogue is the ultimate tactical turn-based roguelike! Draft from over 350 powerful spells to assemble the perfect combination and crush your enemies in 70+ unique encounters. Face brutal choices, adapt to impossible odds, and strike back at the horrors that destroyed the world.

    2025StrategyIndieRPG9.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    DungeonTop — Steam game cover

    DungeonTop

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

    A rogue-like deck-building experience coupled with table top battles. Choose a hero and allegiance then dive deep into the dungeon, evolving your deck for survival. Each choice you make matters, even in between battles!

    2020StrategyIndie6.07 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Astrea: Six-Sided Oracles — Steam game cover

    Astrea: Six-Sided Oracles

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

    Astrea is a DICE-deck-building roguelike that flips the script on deckbuilders by using dice instead of cards and a unique dual “damage” system: Purification vs Corruption. Build a dice pool strong enough to purify Astrea's out-of-control corruption and save the Star System.

    2023StrategyIndieCasual24.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Monster Train — Steam game cover

    Monster Train

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

    Monster Train is a strategic roguelike deck building game with a twist. Set on a train to hell, you’ll use tactical decision making to defend multiple vertical battlegrounds. With real time competitive multiplayer and endless replayability, Monster Train is always on time.

    2020Strategy4.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Wildfrost — Steam game cover

    Wildfrost

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

    Take on the elements in Wildfrost, a tactical roguelike deckbuilder! Journey across a frozen tundra, collecting cards strong enough to banish the eternal winter…

    2023StrategyIndie11.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Slay the Spire — Steam game cover

    Slay the Spire

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

    We fused card games and roguelikes together to make the best single player deckbuilder we could. Craft a unique deck, encounter bizarre creatures, discover relics of immense power, and Slay the Spire!

    2019StrategyIndie6.24 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    Relapse — Steam game cover

    Relapse

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

    A 3D deck building roguelike game. Collect over 240 abilities; level them up, enchant them, pair them up with over 100 trinkets, and synergize them with your companions' abilities to create endless combinations to defeat your foes.

    2022Strategy3.99 USDDeck PlayableSingle-playerSimilar games →
  11. 11
    HSS:Reload — Steam game cover

    HSS:Reload

    Single-player alternative to Castle Morihisa — playable solo, no multiplayer required. Shares Indie with Castle Morihisa.

    This is a very fast God's perspective roguelike shooter, the player will pilot the mech, explore the alien frontier, enjoy the "Crimsonland + Vampire Survivors (Vampire Survivors)" endless killing!

    2024ActionIndie8.99 USDDeck PlayableSingle-playerSimilar games →