Single-player games like Idle Startup
Below are 9 single-player Steam games similar to Idle Startup, 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 Startup page.
Ranked picks
- 1

Bull&Bear Crypto Trading Simulator
Single-player alternative to Idle Startup — playable solo, no multiplayer required. Shares Indie and Simulation with Idle Startup.
Turn $1,000 into a crypto empire: 34 coins, up to 100x leverage, real liquidations. Unlock the options desk, spoof the order book with fake $10M walls, move markets as the whale — then run your own fund. Survive exchange hacks, stablecoin depegs and cascading crashes 📈
- 2

Garbage Growth
Single-player alternative to Idle Startup — playable solo, no multiplayer required. Shares Indie and Simulation with Idle Startup.
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!
- 3

Симулятор ПВЗ
Single-player alternative to Idle Startup — playable solo, no multiplayer required. Shares Indie and Simulation with Idle Startup.
Станьте владельцем пункта выдачи заказов своего любого маркетплейса в этом Симуляторе ПВЗ! Разгружайте посылки, отдавайте заказы, занимайтесь менеджментом и просто зарабатывайте деньги. Сможете ли вы сделать самый успешный пункт выдачи заказов?
- 4

Megaquarium
Single-player alternative to Idle Startup — playable solo, no multiplayer required. Shares Indie and Simulation with Idle Startup.
The public aquarium simulator. Design your displays, look after your fish, manage your staff and keep your guests happy! It's all in a day's work as the curator of your very own Megaquarium.
- 5

Restaurant Empire II
Single-player alternative to Idle Startup — playable solo, no multiplayer required. Shares Indie and Simulation with Idle Startup.
Restaurant Empire 2 is the most realistic and comprehensive restaurant business simulation available, featuring 4 cuisines, 600 recipes, 4 huge cities, 2 campaigns with a total of 34 missions, 1400 interior objects, and a mix of business strategy and role-playing gameplay such as cooking contests.
- 6

Burger Bistro Story
Single-player alternative to Idle Startup — playable solo, no multiplayer required. Shares Indie and Simulation with Idle Startup.
Open your own diner and create custom burgers in this management sim game.
- 7

The Ramen Sensei
Single-player alternative to Idle Startup — playable solo, no multiplayer required. Shares Indie and Simulation with Idle Startup.
Build the ultimate bowl to leap past your ramen rivals and achieve greatness!
- 8

Tank Mechanic Simulator
Single-player alternative to Idle Startup — playable solo, no multiplayer required. Shares Indie and Simulation with Idle Startup.
Renovate & build II World War tanks. Experience highly detailed & realistic simulation game. Take tanks fully apart by using different tools. Transform them from rusty and ruined to fully working. Check them on the training ground, sell or put into your own museum.
- 9

Hearthfield
Single-player alternative to Idle Startup — playable solo, no multiplayer required. Shares Indie and Simulation with Idle Startup.
Hearthfield is a cozy co-op farming game where cooking is king. Research ingredients, master a deep recipe tree, and get rich from the kitchen — not by selling raw crops. Farm, fish, mine, and automate your way across the seasons with up to 4 friends.