A little while ago, I implemented a small roguelike dungeon generator for the cx16. After some time I lost interest in that platform and shelved the project again.
Well guess what, yesterday I stumbled upon the sources again and thought to myself, why don't you try porting this to the MEGA65
It's just a proof of concept really, but you can at least take a stroll through the dungeon, handle doors and descend into the next level(s).
Maybe someone feels inclined to make this into a real game... I am currently working on a completely different project for the M65, so I won't have the time.
You can find the source (and compiled binary on a disc image) here: https://github.com/steph72/megarogue