I participate in a contest of ADVA with a game called "Ruta 9"
http://www.adva.com.ar/foro/index.php?board=27.0
The game is in a windows of 600 x 90 pixels.
I make a game for drive in smoke for the rute 9, too much people die
in the past week, a cloud of burn grass avoid the visibility, only few
seconds for drive and crash !
I use :r4, the colorless colorforth, for make this games, 2 day of 4
hours, code very repeat, sure factorization is needed