Games like Royal Booty Quest
Games like Royal Booty Quest include Slay the Spire, Monster Train, Slay the Spire 2, Balatro, and Trials of Fire. We matched them by the tags players give Royal Booty Quest on Steam (Strategy, Card Battler, Tactical RPG, Turn-Based Tactics, and Roguelite): closest matches first, and among equally close ones the better-known games.

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

Monster Train
Shared: Card Battler · Roguelite · Turn-Based Tactics

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

Balatro
Shared: Strategy · Card Game · Roguelike

Trials of Fire
Shared: Card Battler · Tactical RPG · Turn-Based Tactics

9 Kings
Shared: Strategy · Card Game · RPG

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

Inscryption
Shared: Card Battler · Card Game · Strategy

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

Super Fantasy Kingdom
Shared: Strategy · Roguelite · Roguelike

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

Mewgenics
Shared: Turn-Based Tactics · Roguelite · Turn-Based Strategy

Griftlands
Shared: Card Battler · Roguelite · Strategy

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

Roguebook
Shared: Strategy · Card Game · Roguelite

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

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

Into the Breach
Shared: Strategy · Turn-Based Tactics · Turn-Based Strategy

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

He is Coming
Shared: Strategy · Roguelite · Roguelike

Across the Obelisk
Shared: Card Battler · Turn-Based Strategy · Card Game

Dream of Corpse Lady
Shared: Strategy · Card Battler · Card Game

Darkest Dungeon® II
Shared: Turn-Based Tactics · Roguelite · Dungeon Crawler

Cross Blitz
Shared: Roguelite · Card Battler · Strategy