Book of Adventum is an indie action-adventure FPS. The game takes place in a steam-powered world where the player assumes the role of a handyperson tasked to repair a malfunctioning beacon. Book of Adventum combines the time-honored problem solving of adventure FPS games - shooting people in the face and getting through not-so-difficult puzzles - with metaphysical ponderings, which you can happily ignore. The art style of the game takes a deep bow to the genre originators from the mid-aughts with a cartoon-esque flair.

The soundtrack of the game includes tracks from mystical metal band KuuDelta and ambient master Cyborg See Cyborg Do.

Book of Adventum demo has two different scenes you can choose to play showcasing different aspects of gameplay and the game world.