For a moment, forget about all the reviews about the Wii Play game itself on ign, gamespot, 1up, et al., and forget about the review above...
As of time of writing, this game + Wii Remote package costs $59.99. If you purchase an extra Wii Remote, it costs $49.99. So, simple math tells you that the game costs only $10.00. ONLY $10!?? "Wait a minute. Don't all other Wii games cost between $50 to $60??? OMG! What a sweet deal!" And that, ladies and gentlemen, is the only convincing that you should need if you had any doubts about this purchase.
Nintendo realized that, when they were pricing the system, that $250.00(USD) was the magic number to hit. They could have sold the system with WiiSports, and 4 controllers and charge $375.00(USD) for it, but they understood that this would ward away the economically-minded moms & dads. So, at a loss for Nintendo (it obviously cost Nintendo more than $10/game to develop WiiPlay), they decided to sell the Wii Remote and a simple minigame collection together, so that those moms & dads out there would buy a second remote for little sister Jane, so that she can play with his big brother Johnny.
Now, what can you expect for your purchase of a second remote? Obviously, now you can play WiiSports: Tennis/Baseball/Boxing against another live person, and in the future, you can purchase future games that may require 2 remotes.
What can you expect for the GAME-portion of your purchase? You wouldn't expect much for just paying $10.00 for a game, would you? Well, I am here to tell you that the minigames are worth MUCH more than what you paid for. The fun-factor of most of the games is good. I enjoy playing almost all of the games (except for the cow-racing game). And my kids and I regularly go back to WiiPlay, in rotation with our WiiSports, Rayman Raving Rabbids, and Gamecube games.
Bottomline: BUY THIS NEXT if you have just purchased your system (Oh, and an extra Nunchuk too).