Runehaven is an innovative game that allows players to delve into a rich magic system where they can craft spells by combining over 25 unique runes discovered throughout the game world. This system enables endless spell combinations, such as creating a fire missile by merging fire and missile runes. The game also features a procedurally generated voxel world, which is fully destructible, allowing players to manipulate their environment to discover secrets, shortcuts, or alternative routes to locked areas.

In addition to its engaging magic mechanics, Runehaven offers crisp voxel graphics and a diverse gameplay experience. Players can combat 20 different types of monsters, choose from various magic, melee, and ranged weapons, and engage in thrilling boss battles. Character progression is supported through leveling up, and players can keep track of their runes using a rune book. The game also includes mod support for crafting custom content, alongside an integrated level editor for creating unique worlds.