There are 19 different vehicles available in the game, plus the boats that you use on the Revenge Pro's several water tracks. Through the act of winning races and tournaments and obtaining the various cups, players can unlock "secret" tracks, which are mirrored and reversed versions of the original 24, technically boosting the amount of unique racing tracks up to 96. Each of the six different themes has several tracks devoted to it, and there are 19 total unique tracks.
Rather, they are themed like the sections of amusement parks: Horror World, Planet Adventure, Jungle World, etc. The tracks, however, are based not on the real-life dirt tracks or parking lots where you'd expect to find RC cars tooling around on a Saturday afternoon.
RC Revenge Pro is a behind-the-back racer where players can control cars designed to emulate the appearance of RCs. RC Revenge Pro has decidedly kart-style overtones and will take you through tracks that could only exist in the imagination of those who designed them. While most racing games seek to bring the realistic feel of driving an actual car into the virtual world, RC Revenge Pro tries to capture the whimsy of RC racing.