Games like Astro Builder
Astro Builder. These games share the most with it, and each one says why.

Rocket Star: Idle Tycoon GameUpdated
Also idle, space, production chain
Run a spaceship factory, research new tech and launch rockets toward the Moon, Mars and outer planets while your staff keeps earning in your absence.
75% idle
Space industrial empire
Also space, production chain
Lay out flat conveyor lines for mining, smelting and research, then build warships to take other planets.
87% steam70% idleIdle Planet Miner
Also space, production chain
Mine planets, smelt ore, craft, sell. A tidy mobile-first production chain.
80% idle
Top Tycoon: Coin Theme EmpireUpdated
Also idle, production chain
Build production facilities, spin a fortune wheel for coins and raid rival players to grow a resource empire.

TerraGenesis - Space SettlersUpdated
Also idle, space
Terraform real and fictional planets using NASA data, building habitats and choosing among four factions.

Hero Making Tycoon Idle GamesDormant
Also idle, production chain
Mass produce potato men on a factory line, arm them into soldiers and send them against huge bosses.

Factory WorldDormant
Also idle, production chain
Buy land tiles and link production buildings into chains that keep earning while you are offline.

Hero Factory : Idle TycoonDormant
Also idle, production chain
Mass-produce heroes in factories and send them against bosses, reinvesting gold into more production lines and gear upgraded through a matching minigame.

Idle Lumber Chopper Empire IncUpdated
Also idle, production chain
Chop trees by hand at first, then hire lumberjacks and add machinery to automate a full timber business from forest to factory.

Idle Dot Shooter!Updated
Also idle, space
A minimalist shooter where a turret fires on its own at drifting dots while you buy defence, drone, and economy upgrades and push into tougher galaxies.

ExoMiner - Idle Miner UniverseUpdated
Also idle, space
Start with one small mine and a ship, then expand to other planets, crafting materials and inventing tech while miners and rovers work in your absence.
75% idle
Deep Town: Mining Idle GamesDormant
Also idle, production chain
Mine resources below ground and craft them above into jewelry, chemicals, and plants, linking buildings into production chains run by bots.

Planet Smash : Idle WarsUpdated
Also idle, space
Destroy planets with missiles that fire on their own or with taps for speed, upgrading elemental weapons and collecting coins earned offline.
50% idle
Pasta MachineUpdated
Also idle, production chain
Shape, slice, and form pasta with one-tap controls while growing a production line, with a focus on satisfying sounds and animation.

Hamster Tycoon : Cake MakerDormant
Also idle, production chain
Run a cake factory with hamster managers, balancing machines on production lines to bake pricier cakes.

Idle Lumber Mill - Wood GameUpdated
Also idle, production chain
Plant forests, train lumberjacks, and add milling machines and vehicles to grow a small sawmill into a lumber business.

Lumber Empire: Idle Wood IncUpdated
Also idle, production chain
Start as a lone lumberjack and grow a timber business by expanding forests, hiring managers, and building production lines.

Car Industry TycoonDormant
Also idle, production chain
Run a car plant, upgrading factory hardware and recruiting staff until you turn out premium vehicles.

Mega Tower - Casual TD GameUpdated
Also idle, space
Merge and modify towers in a sci-fi tower defense that fights on its own but lets you aim manually.
50% idle
Berry Factory TycoonUpdated
Also idle, production chain
Manage a berry-to-candy pipeline from fields to factories, trucks and advertising.

Idle Slaughter lncDormant
Also idle, production chain
Run a cattle farm and beef plant, automating machines and hiring managers to fill special orders.

Lumber IncUpdated
Also idle, production chain
Turn logs into planks in a sawmill, hiring lumberjacks and automating lines, with profits growing while you are away.
75% idle
Human Evolution - Idle ClickerDormant
Also idle, space
Tap to drive life from single cells through fish, apes and humans to cyborgs and beyond, then seed evolution on other planets.
25% idle
Milk Farm TycoonUpdated
Also idle, production chain
Take over Grandpa's dairy farm, buy and tend cows, and add production lines that turn milk into butter, cheese, ice cream and more.