Games like No More Slimes!!
Games like No More Slimes!! include Zero Stress King: Idle Defense, Cookie Clicker, Desktop Defender, Shelldiver, and Vampire Survivors. We matched them by the tags players give No More Slimes!! on Steam (Hack and Slash, Incremental, Roguelite, Idler, and Tower Defense): closest matches first, and among equally close ones the better-known games.

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

Cookie Clicker
Shared: Incremental · Idler · Casual

Desktop Defender
Shared: Incremental · Idler · Tower Defense

Shelldiver
Shared: Incremental · Idler · Arcade

Vampire Survivors
Shared: Roguelite · 2D · Pixel Graphics

Tower Wizard
Shared: Incremental · Idler · 2D

Firestone – Idle Clicker Online RPG
Shared: Incremental · Idler · Auto Battler

Scritchy Scratchy
Shared: Incremental · Idler · Roguelite

(the) Gnorp Apologue
Shared: Incremental · Idler · Roguelite

Bills Must Be Paid
Shared: Incremental · Roguelite · Idler

Keep on Mining!
Shared: Incremental · Idler · Casual

Sir, We Have an Orc Problem
Shared: Incremental · Tower Defense · Roguelite

Nodebuster
Shared: Incremental · Idler · Arcade

Nomad Idle
Shared: Incremental · Idler · Roguelite

Samawa Idle
Shared: Incremental · Roguelite · Idler

Master Healer Kale with useless party
Shared: Incremental · Auto Battler · Idler

To The Core
Shared: Incremental · Arcade · 2D

Hades
Shared: Hack and Slash · Roguelite · Indie

Cauldron
Shared: Incremental · Auto Battler · Idler

Crown Siege
Shared: Incremental · Tower Defense · Auto Battler

Tiny Pasture
Shared: Idler · Incremental · Cute

Horripilant
Shared: Incremental · Idler · Casual

Death Must Die
Shared: Roguelite · Hack and Slash · 2D

Doom Sweeper
Shared: Hack and Slash · Idler · Roguelite