Excuse me sir, It its possible to use game engine or Rom Programming via homebrew on this Game jam?

Yes! You can make a game in any way you want as long as it meets all necessary requirement and people can play it.

Thank you! Just to note, So in order to remake an existing game idea for certain retro console as a target platform for exemple, neo geo aes/mvs.  i have to be creative to make something that subverts Console's fame of being arcade perfect (like most of fighting games for exemple).