With this new version of .werkkzeug you can create not only demos, but games too. This version is limited because it is unable to create exe files, but you can simply use .wz3 as player or render video.
WZ3 provides many functions, such as anaglyptic rendering, doing advanced animation, wavelet-transformations and advanced video effects.
Download it:
http://werkkzeug.wallst.ru/?q=downloads.page#wz3full