Unfortunately no, only .GBA rom files are accepted in this jam.
There is an exception where you can upload a game that was made in GB studio so long as it has been exported as a .gba file which can only be done with an external tool on a specific version. (see "Can I use GB Studio?" in the jam overview F.A.Qs)
I don't know what I expected, it quickly turned out I had to learn an entirely new instruction set and how the GBA Hardware worked. I still haven't printed a single pixel to the screen, I can see the values I'm writing in the VRAM but nothing shows up. I did have a lot of fun learning a lot of things about the GBA and the ARM7TDMI CPU
