"MX vs. ATV Unleashed: On the Edge" -- Informal Name
Get ready to hit the dirt with MX vs. ATV: On the Edge! Select your favourite MX bike, ATV, dune buggy, monster truck, or golf cart (!) and speed through a large variety of different tracks, ranging from forests to stadiums. You can also perform wild tricks for massive points to really show off against your competitors! Single player mode in MX vs. ATV features many different ways to play. Choose from Single Race (one race on one track), a Challenge (aim for the highest trick score, highest stunt combo, or most airtime tricks), Free Ride (no restrictions on the track), or just Practice. You can also play Multiplayer games with up to three friends with the PSP's Ad Hoc mode.