Games like Purgatory
Games like Purgatory include SteamWorld Heist, Hero's Adventure: Road to Passion, Stoneshard, UFO 50, and Mount & Blade II: Bannerlord. We matched them by the tags players give Purgatory on Steam (Strategy, Indie, Adventure, RPG, and Action): closest matches first, and among equally close ones the better-known games.

SteamWorld Heist
Shared: Strategy · Indie · RPG

Hero's Adventure: Road to Passion
Shared: RPG · Strategy · Indie

Stoneshard
Shared: Strategy · RPG · Pixel Graphics

UFO 50
Shared: Indie · Strategy · Action

Mount & Blade II: Bannerlord
Shared: Strategy · RPG · Action

Wandering Sword
Shared: RPG · Pixel Graphics · Adventure

The Dungeon Of Naheulbeuk: The Amulet Of Chaos
Shared: RPG · Adventure · Strategy

Knights of Pen and Paper 2
Shared: Strategy · RPG · Adventure

The Escapists
Shared: Strategy · Pixel Graphics · Indie

Dungeon Munchies
Shared: Indie · Adventure · Action

Mount & Blade: Warband
Shared: Strategy · RPG · Action

Labyronia RPG
Shared: Adventure · RPG · Indie

Dragon Cliff
Shared: Strategy · RPG · Adventure

Sands of Salzaar
Shared: Strategy · RPG · Indie

Dead Age
Shared: Strategy · RPG · Adventure

Dungeon of the ENDLESS™
Shared: Strategy · Indie · RPG

Shadowrun Returns
Shared: RPG · Indie · Strategy

OMORI
Shared: Indie · RPG · Pixel Graphics

Caster
Shared: Indie · Adventure · Action

Divinity: Original Sin (Classic)
Shared: RPG · Strategy · Adventure

The World of Kungfu: Dragon and Eagle
Shared: Indie · RPG · Adventure

Renowned Explorers: International Society
Shared: Strategy · Adventure · Indie

Blackguards
Shared: Strategy · RPG · Indie

Hyper Light Drifter
Shared: Indie · Adventure · Pixel Graphics