GBJam has always been pretty casual. It's not as much a competition, but a gathering of people who want to try making a game based on the GB
That's why I asked the community for their input on this question and the response was overwhelmingly positive. But this is still a specific exception. If someone makes their game 64x64 (like LOWREZ Jam) or they use 5 colors or pure mouse controls, we will remove that entry
There are other GB jams out there (there were like 3 just between this month and July!) some more strict than others, I'm pretty sure there was even one where you needed to use ASM programming, so there's something for everyone