Grand Slam Tennis is a tennis game that features venues from all four Grand Slam tournaments; the Australian Open, the French Open, Wimbledon and the US Open. It includes 14 of the top players at the time of release (e.g. Federer, Nadal and the Williams sisters) and 9 retired tennis legends (e.g. Sampras, McEnroe, Navratilova). The game is played with the Wii Remote and Nunchuck and also has full support for Wii MotionPlus where the timing of the swings is measured. Despite the cartoonish character models it aims to be a tennis simulation game with a learning curve, especially when played with the Wii MotionPlus.
There are four game modes:
- The main career mode allows the player to customize their own character then travel to each of the 4 tournaments and attempt to win the Grand Slam.
- Party mode is a collection of mini-games for one to four players. Each features a variation on the rules of tennis.
- Play Now allows one to four players to choose their characters, venues and game length and settings for a quick game.
- Online mode has players competing against each other in ranked or unranked matches. Winning ranked matches earns the player ranking points and leaderboards display the overall ranking of each player.