Rachiell

I understand i am resurrecting a necroed thread from the year Two thousand and nine!!! ten years ago but i wonder if any of you ever became aware of this https://www.tomsguide.com/us/NES-GameBoy-adapter-RetroVision,news-6765.html Basically someone in 2010 did make the exact thing you wanted a NES to game boy conversion cartridge. he called it a "NES RetroVision" you never know you may still find one if you look hard enough.