Super Sonic Doom is a megawad created by Stephen "The Ultimate DooMer" Clark. The overall look and feel of Doom is still there, but elements from Sonic the Hedgehog games are added, such as springs, monitors, and even special stages. There are 15 zones in total, each zone consisting of two acts each, and 5 bonus levels in the game. Each act has a boss fight, with the first act of each zone consisting of a battle against a set-group of monsters, and the second act having a target-based boss. Bonus levels are found every five maps/acts. It can also be played in skulltag 98d without much trouble.