Games like Darkest Dungeon®
Games like Darkest Dungeon® include Darkest Dungeon® II, Stoneshard, Legend of Keepers: Prologue, Crown Trick, and Iratus: Lord of the Dead. We matched them by the tags players give Darkest Dungeon® on Steam (Turn-Based Combat, Dungeon Crawler, Dark Fantasy, Roguelike, and RPG): closest matches first, and among equally close ones the better-known games.

Darkest Dungeon® II
Shared: Dark Fantasy · Dungeon Crawler · Lovecraftian

Stoneshard
Shared: Roguelike · RPG · Turn-Based

Legend of Keepers: Prologue
Shared: Turn-Based Combat · Dungeon Crawler · Roguelike

Crown Trick
Shared: Turn-Based Combat · Roguelike · Dungeon Crawler

Iratus: Lord of the Dead
Shared: Turn-Based Combat · RPG · Roguelike

The Binding of Isaac: Rebirth
Shared: Roguelike · Dungeon Crawler · Difficult

Slay the Spire
Shared: Roguelike · Turn-Based · Singleplayer

Ring of Pain
Shared: Dungeon Crawler · Roguelike · Turn-Based

Path of Achra
Shared: Turn-Based Combat · Roguelike · Dungeon Crawler

Aethermancer
Shared: Roguelike · Dungeon Crawler · Turn-Based

Slay the Spire 2
Shared: Roguelike · Turn-Based Combat · Strategy

Othercide
Shared: Turn-Based Combat · Dark Fantasy · Strategy

Noita
Shared: Roguelike · Dungeon Crawler · Difficult

Tales of Maj'Eyal
Shared: Dungeon Crawler · Roguelike · Turn-Based

The Last Spell
Shared: RPG · Turn-Based Combat · Singleplayer

9 Kings
Shared: RPG · Roguelike · Turn-Based Combat

Fear & Hunger 2: Termina
Shared: Dark Fantasy · RPG · Dungeon Crawler

ELDEN RING
Shared: Dark Fantasy · RPG · Difficult

Battle Chasers: Nightwar
Shared: Turn-Based Combat · RPG · Dungeon Crawler

Quasimorph
Shared: Turn-Based Combat · RPG · Roguelike

Exanima
Shared: Dungeon Crawler · Dark Fantasy · RPG

Shattered Pixel Dungeon
Shared: Dungeon Crawler · Roguelike · RPG

Hades
Shared: Roguelike · Dungeon Crawler · Singleplayer

Warhammer 40,000: Mechanicus
Shared: Turn-Based Combat · Strategy · Turn-Based