The Annihilation Engine for Source is an addon for Valve's Source engine providing many new functions and features for aspiring mod and game developers to use to build their own unique worlds using gameplay features and effects currently not available as standard within the Source engine. The Annihilation Engine is under constant development and is currently being used by Annihilation Game Studios to create four distinct mods for Valve's Source engine to be released throughout 2009 and 2010. A public API for the engine will be released on the 1st of May 2009 allowing other modders to use the engine as a base for their own mods.
An exetremely useful tool. This could make more mods come out the way people want them and reduce the time it takes to produce mods. Everyday, I anticipate an official update to this engine, just waiting for someone to release a public download for it.
Now just comebine this with other essential Source SDK Addons, and you will get the perfect package.
Good luck everyone!