Rayman Doom on PrBoom

[da1]

How to open It into It?
I need accurate instructions, step after step. For a total layman.

[MMMorshew]

I quote myself :

PS. How the Hell open that demo?!!!!oneone!!1!

A source port like PrBoom or ZDoom needs the original game file. For that, just download FreeDoom, a game which has all the original data that the source port needs: http://www.nongnu.org/freedoom/index.html (Download "Complete I-Wad" at the Download page)

After that, extract Zdoom or PrBoom together with Freedoom into a folder, pull "RaymanDoomDemo5maps" over the application icon with your mouse and select Freedoom (in case it doesn`t start on its own).
Buut here is the problem: It will look extremely unpolished and weird this way, because this version of the demo uses original Doom graphics that I not included in the file. So you will get unfitting replaced graphics from Freedoom all over the place - thats why I wanted to create a polished version with fitting original graphics for this forum, because many here don`t own the original Doom game. Also, Zdoom is able to add extra functions like looking up and down, jumping, blood splats on the wall after killing enemies or transparent projectiles like rockets shot by enemies. All these extras were not in the original game and I also didn`t consider them to be used in Rayman Doom. In the polished version, all these things will be disabled, and it will also include the right source port with Freedoom all set up to play.