The idea is to use a 2.5" LCD augmented with a lens and play third-person or top-down games where it doesn't matter losing some information on the sides. I will add a 4" IPS screen on the opposite side. And SWAP the controller to play on the screen you want
I have created a broadcast group on Telegram to share the image of the card I use in the SWAP. With the image, there is the entire configuration of the round screen and the collection of games that I show in the videos.