Ace Combat 4, the first PS2 Ace Combat.
Graphics are what you'd expect from a 9 year old game, though probably better than some games out there today. Gameplay is mainly the campaign, but sure does things for your ego. You start out slowly, as a little-known pilot fighting a losing war. Slowly, the game strokes and feeds your ego, building you up to take down bigger and bigger game, from the legendary Yellow Squadron, to a superweapon known as Stonehenge. Voice acting is done quite well, drawing you further into the strangereal world of the game, which takes place in Usea and Erusia. As with all Ace Combat games, there is always a prerequisite canyon mission and an end-game tunnel flight. Shame it's not well known though, it's a great game at only 3 bucks. If you have an X360, I'd suggest Ace Combat 6 as well, it's basically a rehashed version of this game except on a larger scale, done fairly well. You'll have to be lucky to find a lobby online though, that's my only complaint.
"Mobius One, engage."
...
"Heroes really do exist. We've just seen one. And now, he's coming home."
On a separate note...Am I really the only one here that plays Ace Combat?