Games like Mortal Darkness
Games like Mortal Darkness include Wolcen: Lords of Mayhem, Black Myth: Wukong, Last Epoch, Minecraft Dungeons, and Grim Dawn. We matched them by the tags players give Mortal Darkness on Steam (Fantasy, Action, Dungeon Crawler, Hack and Slash, and Adventure): closest matches first, and among equally close ones the better-known games.

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

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

Last Epoch
Shared: Hack and Slash · Action RPG · Action

Minecraft Dungeons
Shared: Dungeon Crawler · Hack and Slash · Action

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

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

Path of Exile 2
Shared: Hack and Slash · Action RPG · RPG

The Witcher 3: Wild Hunt — Remastered
Shared: Fantasy · RPG · Adventure

Middle-earth™: Shadow of Mordor™
Shared: Action · Fantasy · Adventure

Dragon's Dogma 2
Shared: Fantasy · Action · Action RPG

Minecraft Dungeons II
Shared: Action · Dungeon Crawler · Adventure

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

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

Torchlight
Shared: Fantasy · Dungeon Crawler · Hack and Slash

Gothic 1 Remake
Shared: Action · Adventure · RPG

God of War Ragnarök
Shared: Action · Adventure · Hack and Slash

Diablo® IV
Shared: Hack and Slash · Action RPG · Dungeon Crawler

God of War
Shared: Action · Adventure · Hack and Slash

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

Torchlight III
Shared: Action · Hack and Slash · Adventure

Dragon's Dogma: Dark Arisen
Shared: Fantasy · Action · RPG

Titan Quest II
Shared: Hack and Slash · Action · Action RPG

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

FATE
Shared: Action · Dungeon Crawler · Fantasy