Hacker Gets Doom Running Inside Doom

A hacker has somehow managed to get the classic FPS game Doom to run inside another game of Doom.

Youtuber and Doomworld community member kgsws posted a video on Youtube showing the technical achievement in action.

This is only possible on the original DOS copy of Doom 2 due to an exploit that enables code execution inside the game.

He also got the game Heretic running inside Doom.

#Doom