FSX/P3D. Well this is a nice surprise! He only appears to go by the name Kalong over at FSDeveloper and what he has delivered is a very nice looking Osprey which based on the videos I have seen, seem to have really good flight dynamics. Of all aircraft in FS, tilt rotor's are likely among the most difficult to simulate. The model looks very well done and I am in the process of trying it out myself. If you get and enjoy it, consider sparing a donation to the developer. More info as well as download via the source link. Thanks to ADX reader Jonathan Bleeker for the tipoff!