Just as Wii Sports served as an introduction to the Wii, Wii Sports Resort serves as an introduction to Wii MotionPlus. Nintendo constructed a game full of several sport-themed mini games, all aimed at teaching and showing off what Nintendo's newest peripheral can do. Wii MotionPlus is a peripheral released by Nintendo to fulfill promises made back at launch, of truly realistic motion detecting.
Wii Sports Resort may have been a sequel (of sorts) to Wii Sports, but it takes what Wii Sports did so well, and as a true sequel should, takes it one step further. By providing more variety, and improving on existing games, Wii Sports Resort ends up with a whole greater than the sum of its parts. (Not to mention the great price of $50 for the game and a MotionPlus adapter.)