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kindergarden

n. (misspelling of kindergarten English)

Wikipedia
Kindergarden (demo party)

Kindergarden (KG) is an annual demo party first organized in 1994 in Fjellfoten, Norway. During the first few years it was held irregularly, eventually settling into being an annual event. Since 2001 it has been held in Haga, Norway, the location also used for Kindergarden 4 and 5.

Kindergarden is currently the oldest, still running demoparty which purely focuses on the demoscene, only beaten by the three big computer-parties Assembly, The Gathering and Euskal Encounter.