Games like XP Slime
Games like XP Slime include Banana, To The Core, Shelldiver, Space Rock Breaker, and Nodebuster. We matched them by the tags players give XP Slime on Steam (Casual, Arcade, Incremental, 2D, and 1990's): closest matches first, and among equally close ones the better-known games.

Banana
Shared: Incremental · Casual · 2D

To The Core
Shared: Casual · Incremental · Arcade

Shelldiver
Shared: Casual · Incremental · Arcade

Space Rock Breaker
Shared: Casual · Incremental · Arcade

Nodebuster
Shared: Casual · Incremental · Arcade

Keep on Mining!
Shared: Casual · Incremental · Arcade

Peggle Deluxe
Shared: Casual · Arcade · 2D

Timberman
Shared: Casual · 2D · Arcade

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

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

Cookie Clicker
Shared: Incremental · Casual · 2D

Vampire Survivors
Shared: 2D · Casual · Arcade

Rock Bottom
Shared: Casual · Incremental · Arcade

Progressbar95
Shared: Casual · Arcade · 2D

A Dance of Fire and Ice
Shared: Arcade · 2D · Singleplayer

Click and Conquer
Shared: Casual · Incremental · Arcade

Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad
Shared: Arcade · 2D · Casual

Feeding Frenzy 2 Deluxe
Shared: Casual · Arcade · Singleplayer

DJMAX RESPECT V
Shared: Casual · 2D · Arcade

Peggle™ Nights
Shared: Casual · 2D · Arcade

pureya
Shared: Arcade · Casual · 2D

Ninja Kiwi Archive
Shared: Casual · Arcade · Singleplayer

Deep Space Cache
Shared: Casual · Incremental · 2D

Russian Life Simulator
Shared: Incremental · 2D · Singleplayer