GristTorrent is a program Dave installed on his computer using the green and white CD. This program is a plug-in for the Sburb game and displays the amount of grist belonging to each player. Its function seems to allow the players to share Grist with each other. This would allow John to hand out his extra Shale and his other associated grists to the other players for use in their alchemization processes, such as deploying the Punch Designix.