via http://www.dreamcast.es/news.php?readmore=555#comments

Makaqu (Quake engine for Windows and Dreamcast) has just released an update for Windows and Dreamcast (1.5).

This time it has been tested on Dreamcast, and there are significant improvements. The Dreamcast port looks very solid! Still, two warnings: - Windows: Makaqu crashea if we choose a full screen mode. Will fix in the next version. - Dreamcast: The list of demos can be stopped right after playing the first demo. Note : Added support for 50Hz (not tested). Official Blog: http://makaqu.tumblr.com/ Download (Google code): http://code.google.com/p/makaqu/