FOR EVERYONE INSTALL INSTRUCTIONS:
1. DownLoad
2.extract (unzip) file using WINRAR:(https://www.winzip.com/en/pages/download/winzip/?x-target=bing&promo=bing&utm_id...)
3.go to folder an DRAG-AN-DROP FILE "ColumBineHIGHschool.pk3" to GZDOOM
4.select (HELL-ON-EARTH
5.GOTO OPTIONS AN SELECT THE HARDWARE YOU WANT IT TO RUN ON.
6.PLAY GAME