Games like Once upon a Dungeon - Infinity
Games like Once upon a Dungeon - Infinity include Darkest Dungeon®, Hades II, Hades, Wolcen: Lords of Mayhem, and Path of Exile 2. We matched them by the tags players give Once upon a Dungeon - Infinity on Steam (RPG, Roguelike, Dungeon Crawler, Hack and Slash, and Action): closest matches first, and among equally close ones the better-known games.

Darkest Dungeon®
Shared: Dungeon Crawler · Roguelike · RPG

Hades II
Shared: Roguelike · Action · Hack and Slash

Hades
Shared: Hack and Slash · Roguelike · Action

Wolcen: Lords of Mayhem
Shared: Hack and Slash · RPG · Action

Path of Exile 2
Shared: RPG · Hack and Slash · Dungeon Crawler

Grim Dawn
Shared: Hack and Slash · RPG · Dungeon Crawler

Stoneshard
Shared: RPG · Roguelike · Dungeon Crawler

Path of Exile
Shared: Hack and Slash · Dungeon Crawler · RPG

Torchlight II
Shared: RPG · Hack and Slash · Dungeon Crawler

Path of Achra
Shared: Roguelike · RPG · Dungeon Crawler

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

Book of Demons
Shared: Dungeon Crawler · RPG · Hack and Slash

Last Epoch
Shared: RPG · Hack and Slash · Action

Black Myth: Wukong
Shared: RPG · Action · Dark Fantasy

Exanima
Shared: RPG · Dungeon Crawler · Dark Fantasy

Mortal Sin
Shared: Dungeon Crawler · RPG · Hack and Slash

Children of Morta
Shared: Roguelike · Hack and Slash · RPG

Death Must Die
Shared: RPG · Hack and Slash · Roguelike

Dungeons of Dredmor
Shared: Roguelike · RPG · Traditional Roguelike

Rotwood
Shared: Dungeon Crawler · Hack and Slash · Roguelike

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

Garden of Witches
Shared: Roguelike · RPG · Hack and Slash

Middle-earth: Shadow of War
Shared: RPG · Action · Fantasy

The Incredible Adventures of Van Helsing
Shared: RPG · Hack and Slash · Action