This image contains a playable game!
To play the game you will need the original DOS Doom2 version 1.9 or SHAREWARE version 1.9 (it's free).
Download the original unscaled image "nft.jpg". Place it into your Doom directory. Rename it to "doomsav0.dsg". Launch Doom and load "GAME INJECTION".
You can use DOS emulator if you do not have the original hardware.
This image uses a combination of a few tricks.
Thanks to simple overlap of a few bytes, it is possible to create file that is recognized as a valid JPEG and as a Doom save game. Doom save game is contained inside JPEG comment.
Save game included in this image uses a bug in Doom code to inject new code, therefore running a game that is no...