More schools are teaching students important skills by allowing them to create digital games. The online game-creation platform Gamestar Mechanic, which is designed to build curriculum-aligned skills, is now being used in 800 schools as a learning tool. "When students make a game they have to model the system and have a deeper mastery of the subject. It's a deeper learning experience," said Alan Gershenfeld, president of E-Line Media, the developer of Gamestar Mechanic. "The process also incorporates 21st century skills -- game design requires that."