Games like Dragon Eclipse
Games like Dragon Eclipse include Slay the Spire, Balatro, Slay the Spire 2, Dicey Dungeons, and Wildfrost. We matched them by the tags players give Dragon Eclipse on Steam (Roguelike Deckbuilder, Card Game, Card Battler, Roguelike, and Strategy): closest matches first, and among equally close ones the better-known games.

Slay the Spire
Shared: Roguelike Deckbuilder · Card Game · Card Battler

Balatro
Shared: Card Game · Roguelike Deckbuilder · Roguelike

Slay the Spire 2
Shared: Card Game · Roguelike · Roguelike Deckbuilder

Dicey Dungeons
Shared: Roguelike Deckbuilder · Card Battler · Roguelike

Wildfrost
Shared: Roguelike Deckbuilder · Card Battler · Card Game

9 Kings
Shared: Strategy · Card Game · Roguelike

Dungeons & Degenerate Gamblers
Shared: Roguelike Deckbuilder · Card Game · Roguelike

DICEOMANCER
Shared: Card Game · Roguelike Deckbuilder · Card Battler

Die in the Dungeon
Shared: Roguelike · Card Game · Roguelike Deckbuilder

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

Black Jacket
Shared: Roguelike Deckbuilder · Card Game · Roguelike

Monster Train
Shared: Card Battler · Card Game · Roguelike

Inscryption
Shared: Card Game · Card Battler · Deckbuilding

Yao-Guai Hunter
Shared: Roguelike Deckbuilder · Card Game · Roguelike

Astrea: Six-Sided Oracles
Shared: Roguelike Deckbuilder · Card Battler · Card Game

Across the Obelisk
Shared: Roguelike Deckbuilder · Card Game · Roguelike

My Card Is Better Than Your Card!
Shared: Card Game · Roguelike · Roguelike Deckbuilder

Roguebook
Shared: Card Game · Deckbuilding · Indie

Overdungeon
Shared: Roguelike Deckbuilder · Strategy · Card Battler

Ratropolis
Shared: Card Battler · Deckbuilding · Card Game

Chrono Ark
Shared: Roguelike Deckbuilder · Strategy · Card Game

Breachway
Shared: Card Game · Roguelike · Roguelike Deckbuilder

Griftlands
Shared: Card Battler · Deckbuilding · Card Game

Super Fantasy Kingdom
Shared: Strategy · Roguelike · Card Game