From Wikipedia: M.A.C.H. Modified Air Combat Heroes is a flight combat game with two main modes: a racing mode where players can race their planes vs AI opponents, and a free for all arena where seven AI opponents fight each other and the player for the most kills. The arena and race maps are filled with weapon powerups that the player and the AI can use. The player can fly close to the ground to activate machpower which gives the plane a speed boost. In career mode, by defeating rivals, players can progress by unlocking new planes and parts to upgrade them with. Modes include Arcade Mode (Quick Action), Career Mode (Tournaments), Challenge Mode (five challenges per tier) and Dogfight Mode. The game has been described as Top Gun meets Mario Kart.