Great game, with option to control in 'arcade' mode which is fairly easy & basic and 'realisitic'. The latter is simiar to an old Amiga game called Thunderhawk - the left stick controls pitch/yaw like other plane flight games, whilst the right stick controls RPM & altitude. You have to use both (like a real chopper) in tandem and it takes a bit of getting used to. That said, its great to have the feel of a simulator with the fun of a shoot 'em up.
You can opt for your level of realism, too. Unlike other games like Ace Combat 6 - where your single plane has +100 missiles, making the game a bit too easy, in this one you have 8 long range Hellfires. Once depleted they take 3mins to reload - which adds to the tension as you have to resort to other tactics of attack/evasion in order to survive.
2 player options are also awesome (online and face-to-face) - you can either be each other's wingmen, etc or both sit in the same chopper (one piloting and the other in the forward 'gunner' seat. Awesome fun.
Not many FMV sequences (e.g. like the COD games) but to be honest, who needs them. This is a raw, thrill-ride of a game - amazing deal at the price - so don't be put off for thinking a cheaper game means a worse game.
In a nice touch you play a British army pilot and not US - which these days is plausible now we have them too.
Buy it!! :D