While the game is very similar to the original, it does bring slight improvements. Like the game's 1997 release, there are several characters to choose from, and many more to be unlocked throughout the game. Each character has his or her own strengths and weaknesses, making character selection more than just choosing a skin. The character models themselves are more realistic looking as opposed to the big-headed anime style of the original.
Again, there are several different modes of play, from standards like Stroke, Match, and Tournament play, to the versus, through which new characters can be unlocked. Gameplay itself is a version of the standard '3 click' variety used by the majority of golf games.
This is the first game in the series to include guest characters from other games. They are Sweet Tooth from Twisted Metal, Sir Daniel Fortesque from MediEvil, and Gex from the Gex video game series. They only appeared in the American and European versions.
Source: Wikipedia, "Everybody's Golf", available under the CC-BY-SA License.