Games like Der Geisterturm / The Ghost Tower
Games like Der Geisterturm / The Ghost Tower include Darkest Dungeon®, Legend of Grimrock 2, Fallout 4, Legend of Grimrock, and Cyberpunk 2077. We matched them by the tags players give Der Geisterturm / The Ghost Tower on Steam (Dungeon Crawler, Turn-Based Combat, Grid-Based Movement, Futuristic, and Adventure): closest matches first, and among equally close ones the better-known games.

Darkest Dungeon®
Shared: Dungeon Crawler · Turn-Based Combat · RPG

Legend of Grimrock 2
Shared: Dungeon Crawler · Grid-Based Movement · RPG

Fallout 4
Shared: Adventure · RPG · Atmospheric

Legend of Grimrock
Shared: Dungeon Crawler · Grid-Based Movement · RPG

Cyberpunk 2077
Shared: RPG · Futuristic · First-Person

Battle Chasers: Nightwar
Shared: Turn-Based Combat · Dungeon Crawler · RPG

Might & Magic X - Legacy
Shared: Dungeon Crawler · RPG · Grid-Based Movement

Clair Obscur: Expedition 33
Shared: Turn-Based Combat · RPG · Adventure

Wizardry 8
Shared: Dungeon Crawler · Turn-Based Combat · RPG

Etrian Odyssey HD
Shared: Dungeon Crawler · Turn-Based Combat · Adventure

Fallout: New Vegas
Shared: RPG · Adventure · First-Person

StarCrawlers
Shared: Dungeon Crawler · Turn-Based Combat · RPG

Yakuza: Like a Dragon
Shared: Turn-Based Combat · Adventure · RPG

The Elder Scrolls IV: Oblivion Remastered
Shared: RPG · Adventure · First-Person

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

Lunacid
Shared: Dungeon Crawler · RPG · First-Person

Crown Trick
Shared: Turn-Based Combat · Dungeon Crawler · RPG

Firewatch
Shared: Adventure · Atmospheric · First-Person

Baldur's Gate 3
Shared: Turn-Based Combat · RPG · Adventure

FINAL FANTASY X/X-2 HD Remaster
Shared: Turn-Based Combat · RPG · Adventure

Fallout: A Post Nuclear Role Playing Game
Shared: RPG · Turn-Based Combat · Turn-Based

Touhou Artificial Dream in Arcadia
Shared: Dungeon Crawler · Turn-Based Combat · Adventure

The Elder Scrolls IV: Oblivion® Game of the Year Edition (2009)
Shared: RPG · Adventure · First-Person

Stray
Shared: Adventure · Atmospheric · Exploration