Just for fun: SPACEBAR to start and stop rotors; ARROW keys for direction; ***press "s" to send the copter away from you, "a" to approach. ______This is NOT a simulation, just meant for fun. >>>>This version changes speed with distance (size of helicopter) for a little more realism. >>So go flying in the mountains! :-) ***Sounds MUCH better on my computer than it does online so you might want to download it. ===(You can land on a distant mountaintop, cut your engines, and have a picnic!!) It's fun to watch the helicopter get really small as it flies far away...