Extremely fun game, got it on sale and don't regret it, would have payed more.
Haven't even tried multiplayer yet and I can say it's one of the most fun games I've played in a while. There's an element of adrenaline, chaos, split-second decisions, not even good racing games are as cool as this. The game looks and sounds good, the planes have a degree of customisation (paint) and you have enough planes to choose from. The combat system is good as well, making it easier for new players to adapt rather than making it difficult to shoot stuff. Arcade is the largest factor of this game, simulation not so much, and good for it.
You do need some time to adapt, won't be pro on the first tries, but there's no way you're not gonna enjoy this even a little bit. It might not be addictive, grant it, but that's not a bad thing; this is the sort of game you keep in your library and now and then come back to, because it's gonna be fun anytime.
PS: Joystick or at least controller, keyboard won't be as good.