Wearable is nothing new here..
Adafruit has been pushing wearable circuits for YEARS now (cosplay, games, crafting..etc)
My question(s) are:
1.) What is the END goal here?
- to have an Arduino 'themed' with the game logo/look/colors?
-- Is there any differences from this board you want to make.. and an existing Arduino board? (Say UNO or Pro-Mini?)
- You dont need to adhere to any specific size or color if you do not want to.. although (as mentioned).. if you want your new board to be able to use the variety of Arduino 'Shields' out there.. then it also need to share the same form factor.
But you can make any Arduino compatible board/circuit any color or size you want.. and add in any other hardware...etc you like as well..
example:
I created these: (using my vinyl cutter to create a solder mask, and $17 toaster oven form Wal-Mart)
different size, shape color...etc.. (different functionality as well).. but both are 'Arduino compatible circuits'.. and I use the Arduino IDE to program them..etc..
You dont need the: MCP2221-I chip.... as you can just use an external programmer to program the board instead of a USB cable...
but if you want USB 'ease'.. then follow any of the current Arduino board schematics and follow suit.