Hi, it is pretty impressive.
I've just tried it on a real Tr. but when you walk against the walls. it hangs. If you avoid contact with the walls everything works pretty good. Keep up the good work 
This is really starting to look like a game!
@Vampier: Isn't HDD image a bit over kill for a <32K game? 
A wall with a large black spot on it, like a doorway or something.
It also hangs randomly, when you walk and run in the maze and when you walk through walls, it sometimes exits to dos.
But still it is impressive, speed etc. is really nice and good playable.
I still remember you're first attempt of 3d raycasting. 1 motion every 10 seconds or so.
So this is realy good.
cheers 
Well, i'll guess it is just me then...
It returns to dos everytime i'll take a black open door, it only hangs when you walk outside the maze, with spacebar.
It didn't hang this time just running around.