Games like Asteroid Core
Games like Asteroid Core include Oxygen Not Included, Cookie Clicker, Dyson Sphere Program, Mindustry, and Factorio. We matched them by the tags players give Asteroid Core on Steam (Idler, Tower Defense, Puzzle, PvE, and Strategy): closest matches first, and among equally close ones the better-known games.

Oxygen Not Included
Shared: Base Building · Building · Management

Cookie Clicker
Shared: Idler · Pixel Graphics · Management

Dyson Sphere Program
Shared: Base Building · Space · Building

Mindustry
Shared: Tower Defense · Base Building · Strategy

Factorio
Shared: Base Building · Strategy · Resource Management

Plants vs. Zombies GOTY Edition
Shared: Tower Defense · Strategy · Puzzle

Mini Motorways
Shared: Strategy · Puzzle · Management

They Are Billions
Shared: Base Building · Strategy · Tower Defense

Kingdom Two Crowns
Shared: Tower Defense · Base Building · Strategy

shapez
Shared: Base Building · Strategy · Puzzle

Dungeon Warfare
Shared: Tower Defense · Strategy · Pixel Graphics

IdleOn - The Incremental MMO
Shared: Idler · Pixel Graphics · Management

(the) Gnorp Apologue
Shared: Idler · Strategy · Building

The Perfect Tower II
Shared: Idler · Tower Defense · Strategy

Rise to Ruins
Shared: Tower Defense · Strategy · Base Building

Zero Stress King: Idle Defense
Shared: Idler · Tower Defense · Strategy

Vectorio Classic
Shared: Tower Defense · Base Building · Strategy

Bloons TD 6
Shared: Tower Defense · Strategy · Singleplayer

Sheltered
Shared: Base Building · Strategy · Pixel Graphics

Idle Champions of the Forgotten Realms
Shared: Idler · Strategy · Management

Space Haven
Shared: Base Building · Strategy · Space

shapez 2 - Factory
Shared: Strategy · Puzzle · Management

Mini Metro
Shared: Puzzle · Strategy · Management

Manor Lords
Shared: Strategy · Base Building · Management