Game Revolution - Offers cheat codes. - http://www.gamerevolution.com/oldsite/games/codes/ps2/gravity_games.htm
GameSpot - Jeff Gerstmann review of Xbox version. Includes screen shots, movies, and hints. Score: 1.4 out of 10. - http://www.gamespot.com/xbox/sports/gravitygamesbikesvd/review.html
GameSpy.com - Review of PlayStation 2 version. Includes screen shots. Score: 20 out of 100. - http://archive.gamespy.com/reviews/august02/gravitygamesps2/
Cheat Code Central - Provides cheats and codes. - http://www.cheatcc.com/psx2/gg.html