axis is subdivided into only 64 discrete locations. As a result, objects can only be placed at 64 unit intervals, for example, 0,64,128 or 128,64,32. Objects may not overlap. All objects possessed a "bounding cube", for which detection rules apply as per a cube, i.e. no overlapping. Interaction Games used the Freescape Command Language ('FCL'), an early in-game scripting language, to add interactive elements to Freescape worlds. Scripts may be set to run constantly for the entire world or run constantly for a certain area, or may be attached to individual objects where they will be run once if the object is shot, activated or collided with. Versions of Freescape for the Amiga, Atari ST and PC also supported 'animators', which were FCL programs that use a few extra instructions to create on-screen animations. Software using the Freescape engine Driller (1987) (also known as Space Station Oblivion) Dark Side (1988) Total Eclipse (1988) Castle Master (1990) Castle Master II: The Crypt (1990) Total Eclipse II: The Sphinx Jinx (1991) 3D Construction Kit (1991) (also known as Virtual Reality Studio) 3D Construction Kit II (1992) (also known as Virtual Reality Studio 2.0) See also First person shooter graphics engine References External links Freeware version of Driller for PC A modern reimplementation of Freescape, in OpenGL IGN article about the Freescape games Freescape Engine full games list 1987 software Video game engines