For the record, I'm not the original dev of Retro Puzzle Maker but I have put together a project in it (GRAVEYARD DUDE), and am currently working on a second, that involve heavily changing the code of the base and as such have been in pretty regular contact with Chris, the Retro Puzzle Maker dev to share code. Anyway, I can confirm that it conforms to the requirements. I've even managed to successfully add GRAVEYARD DUDE to a multicart (Super Mario Bros + Duck Hunt, basically the original multicart!) in a previous experiment developing multicart ROMs myself.