Orange Smoothie Productions

Orange Smoothie Productions (OSP) is a PC game mod team which started programming modifications in February 1998 at the University of Kansas by releasing a mod called King of the Hill (unrelated to the cartoon TV series) for Quake II. Although first created for Quake II, OSP is probably best known for modding games based on id Tech 3. An early OSP About page indicated the potential for modding Unreal Tournament and Tribes games, but OSP never released a mod for either game publicly. The Orange Smoothie mod became the de facto standard in many gaming circles, and is still installed on many servers.

Mainly meant for tournament play, the mod provided more interface options and modifications than normal Quake II. The player could effectively change anything in the interface to their liking. There are also added parts to the multiplayer that many consider make it easier than standard Quake for tournament play. Such improvements include only allowing players to start a match after each had declared their readiness, additional statistics such as weapon accuracies on the score window, voting for a map or to kick someone, timeout calls, and much more.