The object of the game is to score the most piety points. The game consists of 8 days (i.e., rounds). In the first 4 days, players simultaneously roll their own dice (that show various book types, abbot influence and travel points) and may do so up to 3 times. After each roll, the players have 3 options: (1) to keep the dice as shown, (2) to reroll exactly one die or (3) to roll all the dice.

Most of the dice are resource dice showing books monks are copying, but there are also abbot influence dice (abbot influences is accrued in the first half, but spent in the second half of the game), and a travel die (allowing a player's novice to go out into towns to do good works and find more books).

In the last 4 rounds, players use their abbot influence to bid for a priority of tasks.

This is a rare (if not unique) "roll + write" game that includes auctions and, unlike many roll + write game; it is highly interactive.

After 8 days, the game ends and the players calculate scores. As in the original Biblios, the relative value of books changes during the game, so players are unsure of which books will be most valuable until the end of the game.