Definitions for "Impromptu"
Offhand; without previous study; extemporaneous; extempore; as, an impromptu verse.
Something made or done offhand, at the moment, or without previous study; an extemporaneous composition, address, or remark.
A piece composed or played at first thought; a composition in the style of an extempore piece.
A short instrumental piece of a free, casual nature suggesting improvisation.
a short musical passage that seems to have been made spontaneously without advance preparation
"unpremeditated" music
Keywords:  utc, february
14:23, 10 February 2007 (UTC)
1) Game played with GM’s intuition and a D12 (the total game components.) 2) Any game result loosely based on a 3D6 roll. Originated by that great GM: Indiana Jones.
A short, improvisational-sounding piece.