See: http://achewood.com/index.php?date=04272005

Imaginary numbers are so named not because they are fictitious, but because
they are along a different axis from real numbers.

Divmod Imaginary is a simulationists take on the realm of role playing,
interactive fiction, and multiplayer dungeons.  It incorporates gameplay
features from each area while attempting to provide a richer environment
than is generally available from existing systems.