Think about it: FUN

If you can imagine your self playing your own game, it's done. If you are starting to write code without a clear idea about you are going to see in the screen, you are lost. Just think about it: FUN. This game should make have a lot of fun. It doesn't need the latest AI and 3D engine to be fun. What is your choice? Pac-man or a boried 3D game? Do you understand?