Single-player games like Mamon King
Below are 15 single-player Steam games similar to Mamon King, 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 Mamon King page.
Ranked picks
- 1

Floppy Knights
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Indie and Strategy with Mamon King.
Meet the Floppy Knights: tangible projections summoned from floppy disks! Tactics fuse with card game mechanics as Phoebe and Carlton, a brilliant young inventor & her robot-arm bestie, square off in turn-based battles. Select your Knights, hone your deck, and execute your strategy for victory!
- 2

Reigns
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Indie and Simulation with Mamon King.
Sit on the throne as a benevolent (or malevolent) medieval monarch of the modern age and swipe your royal controller either left or right to impose your will upon the kingdom.
- 3

None Shall Intrude
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Strategy and Indie with Mamon King.
Venture into None Shall Intrude, a roguelite deck-builder with tile-based combat where you become a powerful Raid Boss. Epic battles, intricate strategies, and the ever-present threat of heroic challengers seeking to vanquish your reign. Will you conquer all or fall to valiant heroes?
- 4

Moonstone Island
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Indie and RPG with Mamon King.
Moonstone Island is a creature-collecting life-sim set in an open world with 100 islands to explore. Make friends, brew potions, collect Spirits, and test your strength in card-based encounters to complete your Alchemy training!
- 5

Montabi
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Indie and Strategy with Mamon King.
Tame, collect, fight! Assemble an unstoppable team of unique Montabi in this Creature-Collector Roguelike Deckbuilder. Master their awesome abilities, synergize their strategic strengths and save the city in tactical turn-based combat!
- 6

Monster Train 2
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Strategy and Indie with Mamon King.
Monster Train returns with all new clans, new enemy factions, new challenges, new modes and more! Defend your Pyre in the classic three-tiered, vertical gameplay that made the original roguelike deckbuilder a hit.
- 7

Necroking
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Strategy and Indie with Mamon King.
Necroking is a turn-based tactics roguelite with vast deckbuilding. You play as a Master of Necromancy. Build your skulls deck, raise skeletons and other scum to defeat settlements desecrated by life.
- 8

Monster Rancher 1 & 2 DX
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares RPG and Simulation with Mamon King.
The legendary monster training duology, “Monster Rancher” and “Monster Rancher 2”, is back!
- 9

Rift Wizard
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Indie and RPG with Mamon King.
Rift Wizard is a tough as nails fantasy roguelike featuring challenging turn based combat and deep open ended character building. Craft your spellbook from over 100 unique spells and abilities and fight your way through a series of procedurally generated challenges to defeat your nemesis.
- 10

Siralim Ultimate
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Indie and RPG with Mamon King.
Siralim Ultimate is a monster-catching, dungeon-crawling RPG with a ridiculous amount of depth. Summon over 1200 different creatures and travel through randomly generated dungeons to acquire resources, new creatures, and loot.
- 11

Aethermancer
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Strategy and Indie with Mamon King.
Monster Taming meets Roguelite. Become the Aethermancer and fight alongside mythical creatures. Explore the ever-changing Fractured Ruins, plan your moves in challenging turn-based battles, and watch your Monsters grow stronger from previous lives and defy death!
- 12

Monster Sanctuary
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Indie and RPG with Mamon King.
Monster taming meets metroidvania. Collect, train and battle monsters in a lovely side-scroller pixel world.
- 13

Digimon World: Next Order
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Simulation and RPG with Mamon King.
The Digital World has run rampant with Machinedramon and is now in a state of utter chaos. As a Digidestined, it’s up to you to restore order to the world in Digimon World: Next Order, a monster collecting RPG.
- 14

Slay the Spire
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Strategy and Indie with Mamon King.
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!
- 15

Absolute Fear -AOONI- / 最恐 -青鬼-
Single-player alternative to Mamon King — playable solo, no multiplayer required. Shares Indie with Mamon King.
20 years after the birth of the legendary horror game "AOONI"... A completely new first-person, 3D horror stealth action "Absolute Fear -AOONI-" is now available! Players take on the role of a younger sister searching for her older sister in a mysterious mansion where AOONI roam.