Test Drive Off Road: Wide Open
Great game with huge levels
There are 3 main areas for you to explore: Hawaii, Yosemite, and a desert. Each level is huge, and there are at least 10 races on each level.
There are 3 kinds of races: checkpoint races, where you have to get the checkpoints in order, then go for the finish; circuit races, where you have go through the checkpoints in order and complete the number of laps; and scramble races, where you have to go through all the checkpoints in any order. The large levels allow you to find your own routes through the races.
There are several modes of play as well. There's a career mode where you buy cars and upgrade them with money you earn from winning races. There's also a Stadium mode, where you race on a slippery dirt track in a circuit race, which is actually pretty hard. And then there's multiplayer mode, where you can freely roam the levels or play a King of the Hill level, where you just have to stay on the target longer than the opponent.
The game is a really fun racing game, but is unfortunately quite easy. If you like racing games and like exploring massive levels and driving offroad, you'll like this game.