N64 (mupen64plus, using Rice video) The Legend of Zelda, Ocarina of time. Mine works almost perfectly, lens of truth doesn't work and rarely there's a few slowdowns.
N64, using n64 video *driver*, Starwars episode 1 - pod racer. Don't use the librerto versions if you can avoid it. They seem slower for some reason. This game is very high pace and does have a few graphical errors which are common with the game and n64 emulators on all platforms, but it's definitely very playable.
Gameboy advanced, gpSP, hacked Pokemon Emerald, Moemon, It's essentially pokemon emerald, except most of the pokemon are hybrids with adorable little girls. It's just really adorable.
Charmander and Charizard.
Playstation: Twisted metal 2, tony hawk series, bloody roar 2.. list goes on and on.
I really like your system by the way. It looks really nice and clean.
You listed it uses the powerboost, but tbh i'm not sure that's enough, i know it can put out more than the rated 500mA and adafruit had it stable at 1A, but i went for the powerboost 1000 in mine. insufficient power issues could be really bad, i read of SD corruption and the like.
What kind of battery do you have in it?
My RPi needs a fan, heat will leech into the battery, so people saying I don't need a fan, don't understand how Li-Po batteries are affected by high temps. Cool pi = cool battery.
I would very much so like to see a Pi2/Pi3 Zero, power and size.