Games like Last Ember
Games like Last Ember include Slay the Spire, Slay the Spire 2, Balatro, Monster Train, and 9 Kings. We matched them by the tags players give Last Ember on Steam (Deckbuilding, Roguelike Deckbuilder, Card Battler, Card Game, and Strategy): closest matches first, and among equally close ones the better-known games.

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

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

Balatro
Shared: Roguelike Deckbuilder · Deckbuilding · Card Game

Monster Train
Shared: Card Battler · Deckbuilding · Card Game

9 Kings
Shared: Strategy · Deckbuilding · Card Game

Dicey Dungeons
Shared: Roguelike Deckbuilder · Deckbuilding · Card Battler

Wildfrost
Shared: Roguelike Deckbuilder · Card Battler · Card Game

Inscryption
Shared: Card Battler · Deckbuilding · Card Game

Griftlands
Shared: Deckbuilding · Card Battler · Roguelite

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

As We Descend
Shared: Roguelike Deckbuilder · Card Battler · Deckbuilding

Super Fantasy Kingdom
Shared: Strategy · Roguelike · RPG

Die in the Dungeon
Shared: Deckbuilding · Roguelike Deckbuilder · Strategy

Roguebook
Shared: Deckbuilding · Card Game · RPG

Monster Train 2
Shared: Roguelike Deckbuilder · Deckbuilding · Card Game

Alina of the Arena
Shared: Roguelike Deckbuilder · Roguelike · Card Game

Touhou: Lost Branch of Legend
Shared: Roguelike Deckbuilder · Card Battler · Strategy

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

Vault of the Void
Shared: Roguelike Deckbuilder · Deckbuilding · Card Battler

StarVaders
Shared: Deckbuilding · Roguelike Deckbuilder · Card Game

DICEOMANCER
Shared: Card Battler · Roguelike Deckbuilder · Card Game

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

Loop Hero
Shared: Deckbuilding · Roguelike · Roguelite

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