This play is as which would say very hard. Still a play of shooting, which does not have to stumble level graphics, because it is clean, the machines are well modelled… One plays there with satisfaction. On the other hand, the difficulty is very high. Indeed, you must launch missiles on the various planes which are brought to your meeting. The fact is, that, each one not having same speed, you will have to save your missiles to have the time of all to clean up them in a precise order. Thus do not go there to the bourrin, or you are likely quickly to lose the part… Good luck!