Grimoire Incremental is a card game with a story-driven campaign, where you can make choices and play differently as you progress through multiple runs. The game allows you to play either in a single-player or multi-player mode, with up to four players in a single game. In single-player mode, you can create and play with a number of different character classes, including the wizard, the warrior, the sorceress, the ranger, the rogue, and the assassin.

The story of the game begins in the year 2080, when a mysterious witch is released from a long-lost and forgotten book of magic. This witch has the power to cast a number of different spells and incantations, which have a strange effect on the people of the world. As you progress through the story, you will find out what is really happening and who is behind it.