Post below an explanation of what you are making :)
Personally, I'm making a game with the working title "Pacadox". Its basically pacman, but rather than traditional ghosts, the ghosts are your previous selves. They follow the same path you took initially. Eventually you have so many ghosts from previous rounds it becomes very difficult. You have to try to remeber paths you've taken to determine where the ghosts will go and strategically navigate the map so that you dont run into your own ghost.