Games like Catharsis
Games like Catharsis include Clair Obscur: Expedition 33, Path of Exile, Lunacid, Darkest Dungeon®, and Tainted Grail: The Fall of Avalon. We matched them by the tags players give Catharsis on Steam (Exploration, Dungeon Crawler, Party-Based RPG, RPG, and Free to Play): closest matches first, and among equally close ones the better-known games.

Clair Obscur: Expedition 33
Shared: RPG · Exploration · Party-Based RPG

Path of Exile
Shared: Free to Play · Dungeon Crawler · Dark Fantasy

Lunacid
Shared: Dungeon Crawler · RPG · First-Person

Darkest Dungeon®
Shared: Dungeon Crawler · RPG · Dark Fantasy

Tainted Grail: The Fall of Avalon
Shared: RPG · Exploration · First-Person

Wuthering Waves
Shared: Free to Play · RPG · Exploration

Legend of Grimrock 2
Shared: Dungeon Crawler · RPG · First-Person

Legend of Grimrock
Shared: Dungeon Crawler · RPG · Party-Based RPG

Fallout 4
Shared: Exploration · RPG · Singleplayer

Queen's Domain
Shared: Dungeon Crawler · Exploration · First-Person

Darkest Dungeon® II
Shared: Dungeon Crawler · Dark Fantasy · Party-Based RPG

Fallout: New Vegas
Shared: RPG · Exploration · Singleplayer

Wizardry: Proving Grounds of the Mad Overlord
Shared: Dungeon Crawler · Exploration · Party-Based RPG

Wizardry 8
Shared: Dungeon Crawler · Party-Based RPG · RPG

Dread Delusion
Shared: Exploration · RPG · Dark Fantasy

Fellowship
Shared: Dungeon Crawler · RPG · Party-Based RPG

Gothic 1 Remake
Shared: Exploration · RPG · Dark Fantasy

Eternium
Shared: Free to Play · RPG · Dungeon Crawler

Lords of the Fallen
Shared: Exploration · RPG · Dark Fantasy

Crimson Desert Enhanced
Shared: Exploration · Singleplayer · RPG

Paper Sorcerer
Shared: Dungeon Crawler · Party-Based RPG · Exploration

Starfield
Shared: Exploration · RPG · Singleplayer

Mortal Sin
Shared: Dungeon Crawler · First-Person · RPG

Cassette Beasts
Shared: Party-Based RPG · Exploration · RPG