Check this out: A Revit export add-in for the Twinmotion real-time engine has been released this summer and caught attention within the architects community. Within the group of advisors and supporters are name like Aéroports de Paris, Atelier Jean Nouvel, Peter Cook, Eric Owen Moss, Peter Eisenmann, Zaha Hadid Architects and Renzo Piano Building Workshop.
Twinmotion allows you to create game-like environments that can be distributet as standalone .EXE files to clients and users that can visit your design as and interactive 3D model.
Read on at www.twinmotion.com