Games like Decks & Daggers
Games like Decks & Daggers include Slay the Spire, Balatro, Slay the Spire 2, 9 Kings, and Sultan's Game. We matched them by the tags players give Decks & Daggers on Steam (RPG, Strategy, Card Game, Adventure, and Roguelike Deckbuilder): closest matches first, and among equally close ones the better-known games.

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

Balatro
Shared: Card Game · Roguelike Deckbuilder · Strategy

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

9 Kings
Shared: RPG · Strategy · Card Game

Sultan's Game
Shared: RPG · Strategy · Card Game

Gordian Quest
Shared: RPG · Card Game · Strategy

Chrono Ark
Shared: RPG · Strategy · Roguelike Deckbuilder

Overdungeon
Shared: Strategy · RPG · Roguelike Deckbuilder

Vampire Crawlers: The Turbo Wildcard from Vampire Survivors
Shared: Strategy · Dungeon Crawler · Card Game

Hand of Fate 2
Shared: RPG · Card Game · Roguelike Deckbuilder

Book of Demons
Shared: RPG · Roguelike Deckbuilder · Dungeon Crawler

Super Fantasy Kingdom
Shared: RPG · Strategy · Card Game

GWENT: The Witcher Card Game
Shared: Strategy · Card Game · RPG

Roguebook
Shared: RPG · Card Game · Strategy

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

Talisman: Digital Classic Edition
Shared: Strategy · RPG · Tabletop

Hand of Fate
Shared: Roguelike Deckbuilder · Card Game · RPG

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

He is Coming
Shared: Strategy · RPG · Card Game

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

Deck of Ashes
Shared: RPG · Strategy · Roguelike Deckbuilder

DICEOMANCER
Shared: Strategy · Card Game · Roguelike Deckbuilder

Dicey Dungeons
Shared: Roguelike Deckbuilder · Strategy · Card Battler

Knock on the Coffin Lid
Shared: Card Game · Roguelike Deckbuilder · Strategy