The game features a roguelite, hero-oriented campaign with deck management, set in a mystical world inhabited by spirits with Celtic and tribal vibes. Players will explore a randomly generated world map filled with numerous levels, bosses, and events to discover. Oaken offers unique, highly tactical battles on a hexagonal grid, where position and rotation are crucial. Players can upgrade their spells and spirits according to their preferences. The game is designed to be easy to learn but hard to master, with both chill and challenge modes suitable for any player.