Command & Conquer Website offers some goodies for modification creation in Red Alert 3. They offer a new Red Alert 3 software development kit for the RTS sequel, saying it offers "greater power than our previous C&C 3 MOD SDK" (they generally refer to mod as MOD for some reason) and a RA3 MOD SDK version of Worldbuilder which should be used to create maps and missions that include user-created art. They also offer downloads of a RA3 MOD SDK UI source pack to allow manipulation of previously inaccessible elements of the game user interface, and promise further releases for mod authors going forward of art source packs and further tutorial/documentation for Red Alert 3 and Uprising. Downloads of the SDK are mirrored on AtomicGamer, FileFront, Gamer's Hell, and The Patches Scrolls; the SDK for Worldbuilder is mirrored on AtomicGamer, FileFront, Gamer's Hell, and The Patches Scrolls; and the source pack is mirrored on AtomicGamer, FileFront, and Gamer's Hell.