The source code has been released here!

https://github.com/next-hack/uSVC (hardware, template project, demos, game loader, 3D case)

The source codes of the 3 games shown in this page can be found here:

https://github.com/next-hack/uSVC_Tetris

https://github.com/next-hack/uSVC_Redballs

https://github.com/next-hack/uSVC_Fairplay-race

The source code of the map editor-file converter can be found here:

https://github.com/next-hack/uChipGameMapEditor

For a guide, you can browse articles here (added continuously, so check on a weekly basis!)

https://next-hack.com/index.php/category/usvc/