Glad you guys like it! I will add Sega and more soon. Sorry for the delay – it’s just been crazy around here.
I’ve received a few questions around theme building, so here is a PDF guide I wrote compiling my process:
http://www.instructables.com/files/orig/FB0/EFNY/I48C86QJ/FB0EFNYI48C86QJ.pdf
And here is the instructables I put together around how I implemented this:
http://www.instructables.com/id/Piulator-Portable-Game-System-via-Raspberry-Pi/