war thunder which in its current state features only aircraft but will also have tanks and ships, game is great has three modes of playing, arcade, historical ( more realistic ) and full real ( camera locked in cocpit no hud etc..)
War Thunder is a next generation MMO combat game dedicated to World War II military aviation, armored vehicles, and fleets. You will take part in all of the major combat battles, fighting with real players all over the world.
http://www.youtube.com/watch?v=0s6YO6wdcVE