Games like Daydam Knight
Games like Daydam Knight include Slay the Spire, Slay the Spire 2, Monster Train, Balatro, and Wildfrost. We matched them by the tags players give Daydam Knight on Steam (Roguelike Deckbuilder, Roguelike, Card Battler, Turn-Based Tactics, and Dungeon Crawler): closest matches first, and among equally close ones the better-known games.

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

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

Monster Train
Shared: Card Battler · Roguelike · Roguelite

Balatro
Shared: Roguelike · Roguelike Deckbuilder · Card Game

Wildfrost
Shared: Roguelike Deckbuilder · Card Battler · Turn-Based Tactics

9 Kings
Shared: Roguelike · Roguelike Deckbuilder · Strategy

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

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

Dicey Dungeons
Shared: Roguelike Deckbuilder · Card Battler · Roguelike

Dice & Fold
Shared: Roguelike Deckbuilder · Card Battler · Roguelike

LONESTAR
Shared: Roguelike · Roguelike Deckbuilder · Card Battler

StarVaders
Shared: Roguelike Deckbuilder · Turn-Based Tactics · Roguelite

Super Fantasy Kingdom
Shared: Roguelike · Roguelike Deckbuilder · Roguelite

Breachway
Shared: Roguelike · Roguelike Deckbuilder · Card Battler

Alina of the Arena
Shared: Roguelike Deckbuilder · Roguelike · Turn-Based Tactics

Inscryption
Shared: Card Battler · Roguelike · Card Game

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

He is Coming
Shared: Roguelike · Dungeon Crawler · Roguelite

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

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

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

DICEOMANCER
Shared: Roguelike Deckbuilder · Card Battler · Roguelike

Banners of Ruin
Shared: Roguelike Deckbuilder · Roguelike · Card Battler

Trials of Fire
Shared: Card Battler · Turn-Based Tactics · Roguelike Deckbuilder