Ah, I didn't know you actually wanted to use it for gaming, I thought you just wanted a large macro pad
![Tongue :P](https://cdn.geekhack.org/Smileys/solosmileys/tongue.gif)
So you want something that's 4x8 or 6x5.. nothing really comes to mind, unfortunately. Maybe someone else can think of something? You can always go the custom route. Get some plates made, handwire the switches/diodes and use a pro micro or teensy as the controller.