Eidos Interactive
was originally developed by Pumpkin Studios and published by Eidos Interactive. In 1999 it was originally released for Microsoft Windows and PlayStation. After having released patch 1.10 final in November 1999, Pumpkin Studios ended their support for Warzone 2100 at January 5, 2000. On March 15, 2000, Pumpkin Studios was closed down by Eidos Interactive. Pumpkin Studios later reformed as Pivotal Games.