Games like Dual Eclipse
Games like Dual Eclipse include Darkest Dungeon®, Vampire Crawlers: The Turbo Wildcard from Vampire Survivors, Clair Obscur: Expedition 33, Lunacid, and Deepest Chamber: Resurrection. We matched them by the tags players give Dual Eclipse on Steam (Card Battler, RPG, Dungeon Crawler, Deckbuilding, and PvE): closest matches first, and among equally close ones the better-known games.

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

Vampire Crawlers: The Turbo Wildcard from Vampire Survivors
Shared: Card Battler · Dungeon Crawler · Deckbuilding

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

Lunacid
Shared: Dungeon Crawler · RPG · First-Person

Deepest Chamber: Resurrection
Shared: Card Battler · Deckbuilding · Dungeon Crawler

Slay the Spire
Shared: Card Battler · Deckbuilding · Dungeon Crawler

Marvels Midnight Suns Digital Edition
Shared: Deckbuilding · Turn-Based Strategy · RPG

Gordian Quest
Shared: RPG · Card Battler · Deckbuilding

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

Deep Sky Derelicts
Shared: RPG · Card Battler · Deckbuilding

Cross Blitz
Shared: RPG · Deckbuilding · Card Battler

HELLCARD
Shared: Card Battler · RPG · Deckbuilding

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

Monster Train
Shared: Card Battler · Deckbuilding · Turn-Based Strategy

Gothic 1 Remake
Shared: RPG · Exploration · Adventure

Age of Wonders 4
Shared: RPG · Turn-Based Strategy · Strategy

9 Kings
Shared: RPG · Deckbuilding · Card Battler

XCOM 2
Shared: RPG · Turn-Based Combat · PvE

NEOVERSE
Shared: Card Battler · Deckbuilding · Turn-Based Strategy

Slay the Spire 2
Shared: Deckbuilding · Card Battler · Turn-Based Combat

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

Across the Obelisk
Shared: Turn-Based Strategy · Card Battler · Deckbuilding

The Elder Scrolls IV: Oblivion Remastered
Shared: RPG · Exploration · Fantasy

Griftlands
Shared: Card Battler · Deckbuilding · RPG