I wrote a demo graphic adventure game with the MEGA65 on device in the style of those 80ies adventures . Although it is a simple demo, it is nice to play with animated sprites and background music. If you are interested, you can find it here on the filehost.
Have fun with it!
The source code is written with the coffeebreak compiler (~700 lines of code) and can also be found in the newest version of the compiler here on the filehost.