'''Warzone 2100''' is a 3D real-time strategy game with a post-apocalyptic setting. Originally a proprietary work written in C by [[w:Pumpkin Studios|Pumpkin Studios]], the source was released under the GPL-2.0 in late 2004 by the publisher [[w:Eidos Interactive|Eidos Interactive]]. Some data used by the latest version is licensed CC-BY-SA-3.0 and CC0, and and some libraries the current version links against are PD and BSD licensed. The Warzone 2100 Project (previously named the Warzone 2100 Resurrection Project) actively maintains the codebase. Gameplay is mouse-driven with some keyboard shortcuts, much like the controls for other real-time strategy games like Starcraft.