Developer website: Ambrosia Software, Inc.
Unlike generic media creation tools such as RealBASIC, Director, or Flash, Coldstone is specifically geared towards making games. By focusing on game creation, Coldstone streamlines the design process, creating polished, stand-alone games that run natively on Mac OS, Mac OS X, and Microsoft Windows. Create once, and distribute on whatever platform you choose, with all of the technical details taken care of for you.
*Previously available here