Mistmare is a role-playing game set in an alternate reality of the year 1996, where the industrial revolution never took place. You play as the monk Isidor, in a medieval looking Europe, using magic based on sounds to fight wrongdoers and monsters and to restore order to the fragile world around you. A mystical, deadly fog has separated the northern parts of Europe from the southern and one of your main tasks is to solve the mysteries surrounding the phenomenon.
The game is fully 3D, and can be played in first or third person perspective. The combat is done in real-time: the player selects attacks, magical spells, or other actions, and clicks on the enemy; the selected action will be repeated by the AI until the player chooses a new one. The game has an internal clock, with certain events occurring only at specific times. Character-building is achieved by using special items: for example, weight-lifting is needed to increase strength, praying to increase magic powers, etc. Magic spells are called "chords" in the game, and can serve to strengthen Isidor in combat, heal him, or weaken the enemy.