Games like Unbound Eternity
Games like Unbound Eternity include Balatro, Slay the Spire, Slay the Spire 2, Inscryption, and Monster Train. We matched them by the tags players give Unbound Eternity on Steam (Roguelite, Deckbuilding, Card Battler, Card Game, and Roguelike): closest matches first, and among equally close ones the better-known games.

Balatro
Shared: Card Game · Deckbuilding · Roguelike

Slay the Spire
Shared: Card Battler · Card Game · Deckbuilding

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

Inscryption
Shared: Card Battler · Deckbuilding · Card Game

Monster Train
Shared: Roguelite · Card Battler · Deckbuilding

Loop Hero
Shared: Deckbuilding · Roguelite · Roguelike

9 Kings
Shared: Deckbuilding · Card Game · Roguelike

Griftlands
Shared: Roguelite · Card Battler · Deckbuilding

Ratropolis
Shared: Deckbuilding · Roguelite · Card Battler

Super Fantasy Kingdom
Shared: Roguelite · Roguelike · Strategy

Cross Blitz
Shared: Roguelite · Deckbuilding · Card Game

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

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

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

Dicey Dungeons
Shared: Deckbuilding · Card Battler · Roguelite

Roguebook
Shared: Deckbuilding · Card Game · Roguelite

Journey to the West
Shared: Roguelite · Card Battler · Roguelike

Across the Obelisk
Shared: Card Game · Deckbuilding · Casual

Peglin
Shared: Deckbuilding · Roguelite · Roguelike

Backpack Hero
Shared: Deckbuilding · 2D · Roguelike

Slots & Daggers
Shared: Roguelike · Roguelite · Strategy

Stacklands
Shared: Roguelite · Card Game · Card Battler

He is Coming
Shared: Roguelite · Roguelike · Strategy

Breachway
Shared: Deckbuilding · Card Game · Roguelike