This is something I have been working on/off the last month or two.. NXFLASH.
NXFLASH is built on the source of XFLASH which was written by Tim Schuerewegen some time ago. It allows you to flash/backup cheat cartridges such as the Xplorer/Xplorder/AR/GS...
For the past few weeks I worked on a Game Boy Homebrew.
Crate Place is a small Sokoban Clone for the Game Boy Classic with some of the orginal levels.
I hope you like it :)
Project page: reachcoding.eu/crate-place
Download v1.0: crate-place-1.0.zip