Games like Petal and Blade
Games like Petal and Blade include Monster Train, Slay the Spire, Slay the Spire 2, Marvels Midnight Suns Digital Edition, and Vampire Crawlers: The Turbo Wildcard from Vampire Survivors. We matched them by the tags players give Petal and Blade on Steam (Deckbuilding, Card Battler, Card Game, Turn-Based Strategy, and Turn-Based Combat): closest matches first, and among equally close ones the better-known games.

Monster Train
Shared: Card Battler · Deckbuilding · Card Game

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

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

Marvels Midnight Suns Digital Edition
Shared: Deckbuilding · Turn-Based Strategy · Turn-Based Tactics

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

Library Of Ruina
Shared: Card Game · Deckbuilding · Turn-Based Combat

Roguebook
Shared: Deckbuilding · Card Game · RPG

9 Kings
Shared: Deckbuilding · Card Game · RPG

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

Wildfrost
Shared: Card Battler · Card Game · Deckbuilding

Balatro
Shared: Card Game · Deckbuilding · Singleplayer

Cross Blitz
Shared: Deckbuilding · Card Game · Card Battler

Darkest Dungeon®
Shared: Turn-Based Combat · Dungeon Crawler · RPG

The Last Spell
Shared: Turn-Based Strategy · Turn-Based Tactics · RPG

Dice & Fold
Shared: Card Battler · Deckbuilding · Turn-Based Combat

Griftlands
Shared: Card Battler · Deckbuilding · Card Game

Magic: The Gathering Arena
Shared: Card Game · Deckbuilding · Turn-Based Strategy

Monster Train 2
Shared: Card Game · Deckbuilding · Turn-Based Strategy

Gordian Quest
Shared: Card Battler · Card Game · RPG

Super Fantasy Kingdom
Shared: Deckbuilding · Card Game · RPG

As We Descend
Shared: Card Battler · Card Game · Deckbuilding

Inscryption
Shared: Card Battler · Card Game · Deckbuilding

Black Book
Shared: Card Battler · Card Game · Turn-Based Tactics

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