Delta3D, the open source game and simulation engine built for military training, was released in version 1.0 form in September 2005 and contains several upgrades over previous versions of the engine. These improvements include a professionally designed level editor, enhanced graphics (including support for shading languages), and advanced terrain generation via the GENETICS (Generating Enhanced Natural Environments and Terrain for Interactive Combat Simulations) terrain system.

With these added features, Delta3D has become the engine of choice for several military simulations, including programs of record. The developers and program managers of these programs were attracted by its advanced technical features, its lack of proprietary vender lock in and licensing fees, and the ability to quickly produce sophisticated applications using Delta3D.

Despite having just released a version 1.0, the Delta3D development team is continuing to make enhancements to the engine. Improvements currently being added to the engine include the ability to quickly generate training scenarios and after action reports (AAR's) in support of the Joint National Training Capability (JNTC), which has funded these advances. Unlike most simulation systems, however, these improvements will be available without cost to any application using Delta3D; there are no "upgrade fees" as in most commercial systems.

This paper discusses the current state of Delta3D version 1.0 and how developers and program managers can use Delta3D to quickly and cheaply build complex training systems. It will also briefly touch upon the systems currently being built using Delta3D as well as discuss what improvements to the engine will be added in the near future.