Single-player games like Idlemancer
Below are 11 single-player Steam games similar to Idlemancer, 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 Idlemancer page.
Ranked picks
- 1

Card Collector Battle
Single-player alternative to Idlemancer — playable solo, no multiplayer required. Shares Action and Strategy with Idlemancer.
A 2D turn-based auto-battler about collecting gods. Summon 432 guardians from Korean, Chinese, Japanese, Egyptian, Norse and Greek mythology, then fuse duplicates into the copies you own to raise their borders from silver to celestial. Your deck decides the fight.
- 2

Northgard Battlegrounds
Single-player alternative to Idlemancer — playable solo, no multiplayer required. Shares Strategy and Indie with Idlemancer.
A city-building auto-battler set in the Viking world of Northgard, where every building you place shapes your clan’s fate. Develop your village, claim the Gods’ blessings, and send your warband to battle against rival players! Every move counts, only one clan will stand.
- 3

Legion Draft
Single-player alternative to Idlemancer — playable solo, no multiplayer required. Shares Strategy and Casual with Idlemancer.
This is an async PvP card autobattler where each card represents a troop group that keeps growing. Draft cards, recruit soldiers, and build a legion that surpasses every opponent. Explore fantasy races with different synergies, and become a master strategist!
- 4

Spellhoard
Single-player alternative to Idlemancer — playable solo, no multiplayer required. Shares Strategy and Indie with Idlemancer.
An autobattler where nothing you buy is ever benched. Every spell stays active, your whole spellbook fights as one machine, and your opponents are real players' builds.
- 5

Slot Heroes
Single-player alternative to Idlemancer — playable solo, no multiplayer required. Shares Indie and Casual with Idlemancer.
A casual idle defense game with a desktop overlay, designed to bring a little fun to your everyday life as you fend off endless waves of monsters and bosses. Recruit and upgrade your heroes to defend against the endless hordes.
- 6

Cybersoul 2
Single-player alternative to Idlemancer — playable solo, no multiplayer required. Shares Action and Strategy with Idlemancer.
Multiplayer Cyberpunk Card Battler & Incremental Hub. 33+ factions, 1,200+ cards. New Roguelite game modes: Raid Boss, Chaos Brawl, Auto Battle, Draft Arena & Gauntlet. Includes Dark Web, Souls & Star Power Idle Games. Sell your soul in the Glitch Arcade. Fight online or go dark. Play Solo offline.
- 7

Deck Beasts
Single-player alternative to Idlemancer — playable solo, no multiplayer required. Shares Strategy and Indie with Idlemancer.
Build a squad of pixel-art beasts and battle your way through the warp in this deck-building auto-battler roguelike. Draft beasts, equip abilities and items, collect relics, and destroy other players with broken builds.
- 8

Epic Card Battle Simulator
Single-player alternative to Idlemancer — playable solo, no multiplayer required. Shares Strategy and Simulation with Idlemancer.
a PvP card auto-battler simulator, Play cards to summon little dudes who auto-battle each other to the death! There's a full solo world conquest mode or you can play with up-to 6 Friends in a tournament battle to the death!
- 9

Fortune Mill
Single-player alternative to Idlemancer — playable solo, no multiplayer required. Shares Indie and Simulation with Idlemancer.
In this incremental game, you must make $1,000,000 in each room to escape. Throw darts, play scratch-off tickets, unlock automation, and choose upgrades carefully as each room affects all the others!
- 10

Idle Skilling
Single-player alternative to Idlemancer — playable solo, no multiplayer required. Shares Indie and Simulation with Idlemancer.
Idle Skilling is the ultimate Idle Game with years of content! Meant to be played for 5-10 minutes a day, you gradually unlock new skills like mining, fishing, pet breeding, crusading, potion-making, lab-research, construction, and more! With new updates coming, you'll never run out of stuff to do!
- 11

IdleOn
Single-player alternative to Idlemancer — playable solo, no multiplayer required. Shares Indie and Simulation with Idlemancer.
The management RPG where your heroes keep fighting even when you're gone! Spend their loot on upgrades, unlock classes from Elemental Wizard to Cannon Pirate, and level up 19 unique skills like Farming, Sailing, and even Construction!