I'm probably want to get experience building some first, before choosing specifics. I'm probably going to follow the tutorials I found on the web link in my previous comment, then I'll expand to others. I don't know specific retro games (Apart from tetris). The first gaming thing I had what the 3Ds, so maybe I could try that, or psvita. I'll probably look for some other interesting retro games. Do you have any recommendations, I could also try ?