Single-player games like IDLE: Intergalactic Defense League Exterminators
Below are 8 single-player Steam games similar to IDLE: Intergalactic Defense League Exterminators, 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 IDLE: Intergalactic Defense League Exterminators page.
Ranked picks
- 1
Hearth and Hamlet
Single-player alternative to IDLE: Intergalactic Defense League Exterminators — playable solo, no multiplayer required. Shares Simulation and Casual with IDLE: Intergalactic Defense League Exterminators.
Start with a campfire. Build a kingdom. Hearth and Hamlet is a medieval citybuilder clicker that blends resource management, in-depth upgrade trees and relaxing idle gameplay. Build your empire by researching new technologies, passing new laws, trading with far-off lands, and more.
- 2
Sludgineers
Single-player alternative to IDLE: Intergalactic Defense League Exterminators — playable solo, no multiplayer required. Shares Simulation and Casual with IDLE: Intergalactic Defense League Exterminators.
Clean, mine and refine pollution in this active incremental game. Cruise through the countryside earning cash and resources, build a refinery, process materials, upgrade equipment, unlock new areas and complete quests.
- 3
Bills Must Be Paid
Single-player alternative to IDLE: Intergalactic Defense League Exterminators — playable solo, no multiplayer required. Shares Indie and Simulation with IDLE: Intergalactic Defense League Exterminators.
You're broke, smash piggy banks, bills must be paid. A short active incremental game. Get money, upgrade, and get debt free!
- 4
Dwarf Eats Mountain
Single-player alternative to IDLE: Intergalactic Defense League Exterminators — playable solo, no multiplayer required. Shares Indie and Simulation with IDLE: Intergalactic Defense League Exterminators.
Dwarves hunger for gold, and no mountain shall stand in their way! Mine riches, unearth artifacts, and upgrade your dwarves to devour ever-bigger peaks in this whimsical incremental game.
- 5
Hole Is Mine
Single-player alternative to IDLE: Intergalactic Defense League Exterminators — playable solo, no multiplayer required. Shares Indie and Simulation with IDLE: Intergalactic Defense League Exterminators.
Hole Is Mine is an incremental adventure about purifying a divine Hole. Dive inside and launch your Mini'Ohs to mine for you. Extract impurities, upgrade your power, and find hidden secrets to grow the Village, customizing your Mini'Ohs with incredible powers. The Hole has spoken!
- 6
Scritchy Scratchy
Single-player alternative to IDLE: Intergalactic Defense League Exterminators — playable solo, no multiplayer required. Shares Indie and Simulation with IDLE: Intergalactic Defense League Exterminators.
Scritchy Scratchy is a super-satisfying scratch card incremental game. Buy stacks of scratch-offs, unlock auto-scratching, and chase massive jackpots. Will you play it safe or go all-in?
- 7
Garbage Growth
Single-player alternative to IDLE: Intergalactic Defense League Exterminators — playable solo, no multiplayer required. Shares Indie and Simulation with IDLE: Intergalactic Defense League Exterminators.
Garbage Growth is a short incremental trash game about collecting people's trash, bananas and even babies, to make money and pollute the world even more. Hire rats, grow your pollution, and make everything worse!
- 8
Piñata Go Boom
Single-player alternative to IDLE: Intergalactic Defense League Exterminators — playable solo, no multiplayer required. Shares Indie and Simulation with IDLE: Intergalactic Defense League Exterminators.
A small incremental game about smashing piñatas, collecting toys, and climbing the corporate ladder as you unlock a vast upgrade tree.