Games like Mystic Gals
Games like Mystic Gals include Vampire Crawlers: The Turbo Wildcard from Vampire Survivors, Slay the Spire, Monster Train, Slay the Spire 2, and Balatro. We matched them by the tags players give Mystic Gals on Steam (Action Roguelike, Roguelike, Deckbuilding, Card Battler, and Turn-Based Tactics): closest matches first, and among equally close ones the better-known games.

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

Slay the Spire
Shared: Roguelike · Card Battler · Deckbuilding

Monster Train
Shared: Card Battler · Deckbuilding · Roguelike

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

Balatro
Shared: Roguelike · Deckbuilding · Card Game

9 Kings
Shared: Roguelike · Deckbuilding · RPG

Griftlands
Shared: Card Battler · Deckbuilding · RPG

Inscryption
Shared: Card Battler · Deckbuilding · Roguelike

Black Book
Shared: Card Battler · Turn-Based Tactics · Dungeon Crawler

One Step From Eden
Shared: Action Roguelike · Deckbuilding · Card Battler

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

Hand of Fate
Shared: Roguelike · Deckbuilding · Action Roguelike

Dice & Fold
Shared: Card Battler · Roguelike · Dungeon Crawler

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

暖雪 Warm Snow
Shared: Action Roguelike · Roguelike · RPG

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Dungeon Crawler

天外武林 (Traveler of Wuxia)
Shared: Roguelike · Deckbuilding · Card Battler

Hades II
Shared: Roguelike · Action Roguelike · RPG

Wildfrost
Shared: Card Battler · Turn-Based Tactics · Deckbuilding

Touhou: Lost Branch of Legend
Shared: Roguelike · Card Battler · Deckbuilding

Roguebook
Shared: Deckbuilding · RPG · Roguelike

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

As We Descend
Shared: Roguelike · Card Battler · Deckbuilding

LONESTAR
Shared: Roguelike · Card Battler · Turn-Based Tactics