I saw a cool post on reddit showing off a handheld pico 8 player using a raspberry pi zero and a tft 1.3" bonnet from adafruit. The bonnet had both input and a tiny screen, and connects with the raspberry pi via pins.

But i also really liked the idea of being able to play games with Friends, so i was thinking if it would be possible to link 2 raspberry pi's, either via bluetooth or wifi or cable. Where the one RPI (raspberry pi) would be in normal mode and be playing pico 8, while the other would be in a "mirroring mode", via the connection it would mirror the display of the 1st RPI, and would send inputs to the 1st RPI (but as player 2)

However i am unsure how to approach this project, and would like some insight and or CC