Angelic Dice is a game designed for quick tabletop gameplay, without a need for heavy rulesets, no complicated books, or need for extensive supplies.
The goal was to create a minimalistic game, with a large range of gameplay options, high replay value, and low setup costs.
The game you are purchasing is two separate files; a game mat to play on, and  a game manual to teach you the rules. Printing this will be two sheets of paper (double-sided, flip on short edge).  Add two sets of dice, and you've got a really fun game.