Games like ReuniunO
Games like ReuniunO include Shelldiver, Dead Cells, To The Core, Vampire Survivors, and Cookie Clicker. We matched them by the tags players give ReuniunO on Steam (Casual, Incremental, Roguelike, 2D, and Multiple Endings): closest matches first, and among equally close ones the better-known games.

Shelldiver
Shared: Casual · Incremental · 2D

Dead Cells
Shared: Roguelike · 2D · Adventure

To The Core
Shared: Casual · Incremental · 2D

Vampire Survivors
Shared: 2D · Casual · Roguelike

Cookie Clicker
Shared: Incremental · Casual · 2D

A Game About Feeding A Black Hole
Shared: Casual · Incremental · 2D

Insaniquarium Deluxe
Shared: Casual · Incremental · Aliens

Astro Prospector
Shared: Incremental · Casual · Roguelike

Rock Bottom
Shared: Casual · Incremental · 2D

(the) Gnorp Apologue
Shared: Incremental · Casual · 2D

That's not my Neighbor
Shared: Casual · Adventure · Multiple Endings

Space Rock Breaker
Shared: Casual · Incremental · 2D

Keep on Mining!
Shared: Incremental · Casual · 2D

Nodebuster
Shared: Casual · Incremental · 2D

Unfair Flips
Shared: Casual · Incremental · 2D

RACCOIN: Coin Pusher Roguelike
Shared: Roguelike · Casual · 2D

Balatro
Shared: Roguelike · Casual · Singleplayer

Timber Rush
Shared: Casual · Roguelike · Incremental

SPACEPLAN
Shared: Casual · Incremental · Space

Strange Jigsaws
Shared: Casual · 2D · Adventure

Digseum
Shared: Casual · Incremental · Colorful

FTL: Faster Than Light
Shared: Roguelike · Space · Singleplayer

Void Miner – Incremental Asteroids Roguelite
Shared: Incremental · Casual · Roguelike