an event which gathers demomakers and provides them competitions to compete in

A demoparty is an event that gathers demosceners and other computer enthusiasts to compete in competitions. A typical demoparty is a non-stop event lasting over a weekend, providing the visitors a lot of time to socialize. The competing works, at least those in the most important competitions, are usually shown at night, using a video projector and big loudspeakers.

a reunion of creators and fans of demos