Air Warrior III starts by giving you more of what the series has already. For starters, it includes all of the Air Warrior II missions, planes and features. There's also four new Pacific planes (the Zeke, the Kate, the Val, the Oscar) and 6 new campaigns. Air Warrior III is also the first in the series to support 3D acceleration, providing a lot faster 3D action and effects.
A major selling point of the series has been its online play, and multiplayer play has been completely redesigned. Now it features up to 250 in the same mission.