The Adventures of MassMouth is the first in a series of three PWADs by Mike "Cyb" Watson. The original version was released on February 23, 2000. This does not run with the latest versions of ZDoom, so the older version 1.22 is needed to play it. In 2003, an updated version was released titled The Adventures of MassMouth Do Over!, fixing bugs and also adding several extra features. This updated version runs properly with version 2.0 of ZDoom.