Games like One More Slime
Games like One More Slime include Cookie Clicker, Idle Champions of the Forgotten Realms, Skul: The Hero Slayer, Tower Wizard, and Timberman. We matched them by the tags players give One More Slime on Steam (Action, Idler, Incremental, 2D, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Idler · Incremental · Pixel Graphics

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

Skul: The Hero Slayer
Shared: Action · Pixel Graphics · 2D

Tower Wizard
Shared: Idler · Incremental · 2D

Timberman
Shared: Action · Pixel Graphics · 2D

Broforce
Shared: Action · Pixel Graphics · 2D

DELTARUNE
Shared: Pixel Graphics · Funny · 2D

SANABI
Shared: Action · Pixel Graphics · 2D

Firestone – Idle Clicker Online RPG
Shared: Idler · Incremental · Action

Dungeon Munchies
Shared: Action · Pixel Graphics · Indie

Shovel Knight: Treasure Trove
Shared: Pixel Graphics · Action · 2D

Duck Game
Shared: Action · Pixel Graphics · Funny

Vampire Survivors
Shared: Pixel Graphics · 2D · Action

Katana ZERO
Shared: Action · Pixel Graphics · 2D

Pizza Tower
Shared: Funny · Pixel Graphics · Indie

Gunpoint
Shared: 2D · Action · Pixel Graphics

The Escapists
Shared: Pixel Graphics · 2D · Action

Rhythm Doctor
Shared: Pixel Graphics · Action · 2D

Timber Rush
Shared: Idler · Incremental · Indie

Undertale
Shared: Pixel Graphics · Funny · 2D

Horripilant
Shared: Idler · Incremental · Pixel Graphics

Rogue Legacy
Shared: Action · 2D · Indie

Kingdom Rush - Tower Defense
Shared: 2D · Action · Fantasy

Shelldiver
Shared: Incremental · Idler · 2D