This game has tons of content considering it's a PSP game.

User Rating: 9 | MX vs. ATV Unleashed: On the Edge PSP
MX vs. ATV On The Edge is one of the best PSP racing games. There at least 60 different tracks and some huge free roam environments. The events to choose from include Supercross, Motocross, Freestyle Motocross, Supermoto and much much more. The vehicles to choose from are Dirt Bikes, ATVs, Monster Trucks, Golf Carts, Dune Buggys and Trophy Trucks. There are at least 15 Supercross races, 15 Motocross tracks, 3 Supermotos and about 10 Freestyle Stadium tracks along with dozens of others. Every track looks great and has alot of detail and this game has some very impressive graphics. In freestyle events you have about 20 or more tricks to use and they can all be customized to different button settings to fit your driving style. The rider you use is totally customizable and you can choose your helmet, boots, suit and goggles. The bikes are customizable too and you can choose details down to the handle bars. There are plenty of vehicles to race in and this game provides plenty of off-road racing for a PSP game. This game's biggest problem is the long loading times. Every single race takes at least 1 minute to load up. Once the game does load up the graphics are great and the game has very smooth framerate. If you can get past the really long loading times you can enjoy this game because it is the best PSP off-road racing game.