The patch makes extensive use of the des-file format, often ordering multiple MAP and MAZEWALK commands to produce the new levels. There are five groups of Heck² levels: heck-a, heck-b, heck-c, heck-d, heck-e. Each game has a 25% chance of a heck-a level, a 50% chance of a heck-b level, a 75% chance of a heck-c level, a 100% chance of a single heck-d level, and four of the heck-e levels. The heck-a levels include: The heck-b levels include: The biodiversity patch incorporates the Heck² patch.