Insanity is DooM 2 Survival horror wad. It takes place in Poland 9 years ago, you play as Policeman who's going Insane.
Installation:
Download GZDoom -->https://zdoom.org/index
Get DOOM2.WAD from DOOM 2 folder or download.
Put Doom2.wad file into GZdoom folder
Download Insanity WAD and paste it to GZDOOM folder.
Drag Insane.wad on GZDOOM icon.
That's all!
