Thankfully the STM32’s inputs are 5V tolerant, so things worked just fine. Simple Game Boy cartridges like Tetris were able to directly map a ROM device into the Game Boys memory space.

We’ve seen plenty of gaming handhelds that are meant to be the new portable vessel through which you play your Game Boy cartridges ... centric puzzle games like Tetris or Alleyway.

There’s photo evidence — and today, he’s revealing his own take on the ultimate cartridge-playing ... with a genuine copy of Tetris like the original Game Boy often famously did.