4MLinux has always been a big fan of classic "shoot'em up" games. Freedoom is an amazing FPS, which is under continuous development, so no wonder that this game is getting better and better.
1) Boot your copy of 4MDoom:
2) The first phase of Freedoom will be started:
4MLinux will try to load dedicated display drivers for your video card. But if your GPU is unsupported, 2D drivers will be used instead.
3) When you quit the first phase of Freedoom, the second one will be started for you:
4) And when you quit the second phase of Freedoom, alsamixer will be opened (to enable you to adjust the sound volumes):
Just press the Escape button to return to Freedoom.
Have fun :-)