Games like Slime Rule
Games like Slime Rule include Stoneshard, Darkest Dungeon®, Noita, Vampire Survivors, and Moonlighter. We matched them by the tags players give Slime Rule on Steam (RPG, Puzzle, Roguelike, Dungeon Crawler, and Roguelite): closest matches first, and among equally close ones the better-known games.

Stoneshard
Shared: RPG · Roguelike · Pixel Graphics

Darkest Dungeon®
Shared: Dungeon Crawler · RPG · Roguelike

Noita
Shared: Roguelike · Dungeon Crawler · Pixel Graphics

Vampire Survivors
Shared: Roguelite · 2D · Roguelike

Moonlighter
Shared: Dungeon Crawler · Roguelike · Roguelite

The Binding of Isaac: Rebirth
Shared: Roguelike · Dungeon Crawler · Pixel Graphics

Dungreed
Shared: Roguelike · Roguelite · Pixel Graphics

Legend of Keepers: Prologue
Shared: RPG · Roguelike · Dungeon Crawler

Rotwood
Shared: Dungeon Crawler · Roguelite · Roguelike

Hades II
Shared: Roguelike · Roguelite · RPG

UnderMine
Shared: RPG · Roguelite · Dungeon Crawler

Heroes of Hammerwatch II
Shared: RPG · Dungeon Crawler · Roguelike

Children of Morta
Shared: Roguelike · RPG · Pixel Graphics

Crown Trick
Shared: RPG · Roguelike · Dungeon Crawler

Dead Cells
Shared: Roguelike · 2D · Roguelite

Halls of Torment
Shared: Roguelite · Roguelike · RPG

Crypt of the NecroDancer
Shared: Roguelike · Dungeon Crawler · Pixel Graphics

Streets of Rogue
Shared: RPG · Roguelite · Roguelike

Death Must Die
Shared: RPG · Roguelite · Pixel Graphics

DemonCrawl
Shared: RPG · Puzzle · Roguelike

Hades
Shared: Roguelite · Roguelike · RPG

Slice & Dice
Shared: Roguelike · Dungeon Crawler · RPG

DELTARUNE
Shared: RPG · Pixel Graphics · 2D

South Park™: The Stick of Truth™
Shared: RPG · Comedy · 2D

