The Red Alert 3 MOD SDK provides not only the same, but also greater power than our previous C&C 3 MOD SDK. It also introduces a fresh breath of unique features to greatly simplify the process of compiling a mod with our new Red Alert 3 Mod BuildStudio. Download the SDK to start modding and be sure to download the other tools below as well (see description). The MOD SDK includes a wealth of documentation and instructions to get you started!
Modders who will be creating multiplayer maps and scripted single player missions with their specific mod art assets will need to download our unique MOD SDK version of Worldbuilder. Please note, this version of Worldbuilder is only necessary for modders who would like to use their own art assets to create maps and missions with. If you are not creating new art for your mod or building a custom map with non-RA3 art assets, then you do not need to download this version of Worldbuilder. The Mod SDK version of Worldbuilder is significantly larger to accommodate compatibility with the Mod SDK as well as the game data. For further info, please refer to Question 3 in this interview.
UI Source Pack
The User-Interface source pack includes everything from the "APT" folder of Red Alert 3 (minus the SWF files) which previously could not be accessed. This UI screen pack will allow modders to use the Red Alert 3 User-Interface source files as direct reference for dimensions, file size, and art style if you will be modifying the UI in your Red Alert 3 Mod.