sudomod

Hello i have a generic pcb chinese. (See first photo) and i want to put her in game boy zero. Do you think its possible? With cut like the second photo and soldering for A,B,X,Y... where i put a point

Looks like that will work. But, you can easily get simple PCB's on eBay for $10 or less, which will do that same job, and fit exactly in the gameboy.

Ok thank you for you answer. ☺

From what I remember the alignment of the ABXY buttons on the SNES is slightly different than that of the AB on the DMG, now the contacts on the PCB look pretty big so you can get some wiggle room, but you may want to check alignment before you go drilling into a case.
The advantage of using the controller is that you only have 4 wires to wire up vs 13+ for a common ground PCB (including LR buttons).