Games like Rogues' Purgatory
Games like Rogues' Purgatory include Elin, Darkest Dungeon®, Tales of Maj'Eyal, Path of Achra, and Shattered Pixel Dungeon. We matched them by the tags players give Rogues' Purgatory on Steam (Early Access, Traditional Roguelike, Choices Matter, Dungeon Crawler, and Exploration): closest matches first, and among equally close ones the better-known games.

Elin
Shared: Traditional Roguelike · Roguelike · RPG

Darkest Dungeon®
Shared: Dungeon Crawler · Roguelike · RPG

Tales of Maj'Eyal
Shared: Traditional Roguelike · Dungeon Crawler · Roguelike

Path of Achra
Shared: Roguelike · Dungeon Crawler · Traditional Roguelike

Shattered Pixel Dungeon
Shared: Traditional Roguelike · Dungeon Crawler · Roguelike

Stoneshard
Shared: Roguelike · RPG · Dungeon Crawler

Noita
Shared: Dungeon Crawler · Roguelike · Perma Death

Dungeons of Dredmor
Shared: Traditional Roguelike · Dungeon Crawler · Roguelike

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

Rogue Empire: Dungeon Crawler RPG
Shared: Traditional Roguelike · Dungeon Crawler · Perma Death

Darkest Dungeon® II
Shared: Dungeon Crawler · Roguelike · Perma Death

One Way Heroics
Shared: Traditional Roguelike · Dungeon Crawler · Perma Death

Drova - Forsaken Kin
Shared: Exploration · RPG · Choices Matter

Undertale
Shared: Choices Matter · RPG · Pixel Graphics

ADOM (Ancient Domains Of Mystery)
Shared: Traditional Roguelike · Dungeon Crawler · Perma Death

Dungeon of the ENDLESS™
Shared: Roguelike · Dungeon Crawler · RPG

Moonlighter
Shared: Dungeon Crawler · Roguelike · Pixel Graphics

UnderMine
Shared: Dungeon Crawler · RPG · Pixel Graphics

Loop Hero
Shared: Roguelike · Choices Matter · Pixel Graphics

Rogue
Shared: Traditional Roguelike · Dungeon Crawler · Perma Death

Cogmind
Shared: Traditional Roguelike · Dungeon Crawler · Roguelike

Quest of Dungeons
Shared: Traditional Roguelike · Dungeon Crawler · Exploration

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

Zorbus
Shared: Traditional Roguelike · Dungeon Crawler · Roguelike