You are a common swift (apus apus), world's fastest bird. This simulator will inmerse you into this fascinating experience in which you will be able to freely fligh, learn throughout interactive tutorials, unlock amazing skills, participate into competitive challenges, discover secret things... and many more. A: Aerodynamics P: Physics U: Ultra-realistic S: Simulator The magic of this small birds won't leave you indifferent. Maybe that can help to save this specie from extintion.