Make 2D and 3D Games with Superpowers & HTML5

Superpowers is an HTML5 development environment for making 2D and 3D games. It can be extended with plugins and lets you collaborate in real-time. Superpowers is a downloadable HTML5 app. You can use it solo like a regular offline game maker, or setup a password and let friends join in on your project through their Web browser. It’s great for working together over long periods of time, for jamming over a weekend, or just for helping each other out with debugging!

Requirements: HTML5 Support Browser
Demo: http://superpowers-html5.com/index.en.html
License: ISC License