demoparty

demoparty
 n.

   [{demoscene}] Aboveground descendant of the {copyparty}, with emphasis
   shifted away from software piracy and towards {compo}s. Smaller
   demoparties, for 100 persons or less, are held quite often, sometimes
   even once a month, and usually last for one to two days. On the other
   end of the scale, huge demo parties are held once a year (and four of
   these have grown very large and occur annually -- Assembly in Finland,
   The Party in Denmark, The Gathering in Norway, and NAID somewhere in
   north America). These parties usually last for three to five days,
   have room for 3000-5000 people, and have a party network with
   connection to the internet.