there is a game called linerider ([url removed, login to view]) that allows people to make this 'track', then hit play, and allow some character to ride their 'track' to see how well they made it. see someone's example at [url removed, login to view]
i want something like this, but better. i want more detailed graphics, i want it to run smoothly and crisply. more options that a user can use. such as clicking one icon puts down a regular track, clicking another button allows the member to put in a faster track, add a loop, and others i will provide. then allow members to re-edit their tracks, or make them into an mpg allowing them to add background music, that they provide with an mp3.