I have G3.5, but may not be the best to answer your questions as I am new. I enjoy the program and I got additonal planes from the knife edge site. You might want to ask RF3/3.5 questions there. [link=http://www.knifeedge.com/forums/]Knife Edge[/link]. But I do know you can do multi player flys and additonals planes are available on that site.