Games like Cyclopean: The Great Abyss
Games like Cyclopean: The Great Abyss include Darkest Dungeon®, Darkest Dungeon® II, Stoneshard, The Binding of Isaac: Rebirth, and Legend of Keepers: Prologue. We matched them by the tags players give Cyclopean: The Great Abyss on Steam (Turn-Based Combat, Dungeon Crawler, RPG, Lovecraftian, and Dark Fantasy): closest matches first, and among equally close ones the better-known games.

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

Darkest Dungeon® II
Shared: Dungeon Crawler · Dark Fantasy · Lovecraftian

Stoneshard
Shared: RPG · Roguelike · Dungeon Crawler

The Binding of Isaac: Rebirth
Shared: Dungeon Crawler · Roguelike · Indie

Legend of Keepers: Prologue
Shared: Turn-Based Combat · Dungeon Crawler · RPG

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

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

Fear & Hunger 2: Termina
Shared: RPG · Dark Fantasy · Dungeon Crawler

Look Outside
Shared: RPG · Turn-Based Combat · Lovecraftian

Path of Achra
Shared: Turn-Based Combat · RPG · Dungeon Crawler

Iratus: Lord of the Dead
Shared: RPG · Turn-Based Combat · Dark Fantasy

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

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

Exanima
Shared: Dungeon Crawler · RPG · Dark Fantasy

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

Noita
Shared: Dungeon Crawler · Roguelike · Difficult

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

Warhammer 40,000: Rogue Trader
Shared: RPG · Turn-Based Combat · CRPG

Grim Dawn
Shared: RPG · Dungeon Crawler · Dark Fantasy

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

DARK SOULS™: REMASTERED
Shared: RPG · Dark Fantasy · Difficult

Aethermancer
Shared: Dungeon Crawler · Roguelike · Party-Based RPG

Metaphor: ReFantazio
Shared: Turn-Based Combat · RPG · Dark Fantasy

Dungeon of the ENDLESS™
Shared: RPG · Roguelike · Dungeon Crawler