Garry’s Mod is a sandbox mod for the Source Engine. Unlike normal games there aren't any predefined aims or goals. Players are given tools and are left to entertain themselves. The player is in a world where objects can be created and destroyed on demand. Where people can be created and destroyed with the click of a mouse. A world made for him. A world he made.
This is a map I recreated from a DOOM mod a friend of mine had created. THIS ADDON REQUIRES DOD AND EP2 CONTENT! ALSO, IM NOT ENTIRELY SURE THIS WOULD WORK WITH GMOD 13 ZS SINCE THIS WAS MADE FOR GMOD 12.
4 years in the work. hopefully, it'll be worth the wait.