I bought a GameShell kit a few months ago. I didn’t pay much attention on the specs 'cause the look and the title "Retro Games" was enough for me. So, when I found out that the CPI3.1 had a HDMI port and Blooth built in, I came up with a bald idea immdiately. Then I bought a CPI3.1 and started my little project. Here's my work.
It's on thingiverse.