Slay the Spire: TBG Companion is the official companion app for Slay the Spire: The Board Game. It offers a range of features to elevate your board game experience. The app includes a comprehensive Compendium, encompassing all game cards, events, items, enemies, and more. With filters and search options, finding specific cards becomes a breeze.

Additionally, the app provides an interactive Rulebook, enabling quick navigation through search and links. It also features a Music Player, allowing you to enjoy tracks from the original video game and bonus content like the Trailer Theme and the remix album Slay the Spire: Reslain.