I've seen that it is possible to play Doom using prboom (it is already installe on the SD card image provided by Retropie project http://blog.petrockblock.com/download/r ... ect-image/
Unfortunately, as mentioned in the post http://www.raspberrypi.org/forums/viewtopic.php?t=21923
if you want to play with similar games like Heretic or Hexen you need "raven branch" of chocolate doom (http://www.chocolate-doom.org/wiki/inde ... ven-branch
I'm not an expert of programming in Linux etc, so is there someone out there that is able to run these games on raspberry???
1) Dos emulators are not the best solution due to performances issues.
2) I've already have the hexen.wad and heretic.wad but is not enough