Games like Idle Universe Creator
Games like Idle Universe Creator include Keep on Mining!, Shelldiver, Cookie Clicker, Nodebuster, and A Game About Feeding A Black Hole. We matched them by the tags players give Idle Universe Creator on Steam (Casual, Incremental, Idler, Relaxing, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Keep on Mining!
Shared: Incremental · Casual · Idler

Shelldiver
Shared: Casual · Incremental · Idler

Cookie Clicker
Shared: Incremental · Idler · Casual

Nodebuster
Shared: Casual · Incremental · Idler

A Game About Feeding A Black Hole
Shared: Casual · Incremental · Relaxing

Digseum
Shared: Casual · Incremental · Idler

Keep on Mining! - Worlds
Shared: Casual · Incremental · Idler

Click and Conquer
Shared: Casual · Incremental · Idler

Space Rock Breaker
Shared: Casual · Incremental · Idler

Loot Loop
Shared: Casual · Incremental · Idler

Click the Button
Shared: Casual · Incremental · Idler

Timber Rush
Shared: Casual · Idler · Relaxing

To The Core
Shared: Casual · Incremental · 2D

Tiny Pasture
Shared: Idler · Incremental · Casual

Human-powered spacecraft
Shared: Casual · Incremental · Relaxing

Fortune Mill
Shared: Incremental · Idler · Casual

Idle Champions of the Forgotten Realms
Shared: Idler · Incremental · Singleplayer

Bills Must Be Paid
Shared: Incremental · Relaxing · Idler

Melvor Idle
Shared: Casual · Idler · Singleplayer

DAVE THE DIVER
Shared: Casual · Relaxing · Singleplayer

Oik
Shared: Casual · Incremental · Relaxing

Fishing Inc
Shared: Casual · Incremental · Relaxing

Marisa!ReturnTheBook!
Shared: Casual · Incremental · Idler

PegIdle
Shared: Incremental · Casual · Idler