Can you use the mouse as part of the button scheme? So, the mouse would serve as the D-pad, the left click would serve as A, and right click would serve as B.
No, that would just open a whole can of worms. The jam is about making a game that feels like it belongs in a Game Boy
u can click on screen buttons
No, because there's no mouse in a Game Boy. You can use the mouse buttons themselves as A and B if you want, but not the cursor
there will be a game boy in the game ITSELF