Doom64 EX was one of Samuel Villarreal's passion projects, a source port developed for the express purpose of playing the original Doom 64 on the PC as accurately as possible. It also has its own level editor, allowing fans to make their own PWADs using the same features that the original designers used. As opposed to, you know, painstakingly recreating it all using a source port like GZDoom or Doomsday. The latter was the base of the Doom 64: Absolution TC, a project that Kaiser had a hand in and which is featured as one of Doomworld's Top 10 WADs of 2003.
