Doom Perverse - one of the earliest known European Doom mods, made for the original 1993 Doom at unknown time in 1990's in the Czech Republic.
The mod is simple and crudely done, simply replacing weapons and items with gory porn versions drawn in MSPaint and crude digitalized pictures. The shotgun and the saw are replaced with penises, the Plasma Riflee is a female breast and shoots milk, the BFG9000 a vagina shooting blood. Most of the messages and sounds are in Czech language. No one knows who made this mod and when, but it got uploaded to Doomworld in 2005.