Sousanator has released a PSP version of the addicting MCDonalds Serve 'N Go game. Here is what he had to say about it....
This is my version of the internet game McFun 'N Serv (the site + game is in Dutch)
You basically work at McDonalds, and have to retrieve all the food the customer asks for, in a certain amount of time. For each food item you bring, you get 5 points, for each sale you get an additional 50 points. Time will also decrease gradually when you make a sale.
This is a LUA game, and requires Lua Player (put it in the Lua Player Applications Folder)