I'm gonna wait for Steam version
Free work is ok if it's not-commercical project, such as modding for game. If it's commercical and they're going to make money off your work then it's unfair.
Wave Engine Demo: Scene Transitions
This short video demonstrates a series of new screen transitions available in WaveEngine with the help of ScreenContextManager. Users are allowed to create their own custom transitions.
© WaveEngineChannel, 2015 YouTube Link