Daubert Sébastien posted a new version of his demo/game which he created using
CopperCube:

It's always impressive what good artists can create. I like especially the music in that demo, and that it is quite interactive already (you can pick up items, open doors etc). The demo is available as Windows .exe and MacOSX .app and can be tested at the
CopperCube forum thread (direct download:
Windows,
Mac OS X).