Wii Play has 9 mini games, most which are not that great. But the bundled in Wii remote makes it a good deal.
The first mini game in the collection is the Shooting Range. This is one of the best mini games where you shoot targets, cans, ducks, aliens. It kind of reminds me of the old Duckhunt game without the laughing dog. When you shoot at the targets, you get more points and the player with the most points wins.
Next is the Find Mii game, which is an ok game. I like the use of Miis in it, it is always fun to see your favorite Miis in a game. In this game you try to find different Miis in a crowd. The game may ask you to find a specific Mii, 3 of the same Mii, a sleepy Mii, or the fastest Mii. The environments around the Miis often change to make the game harder, like it would become darker, they would be swimming, or on escalators. Overall this is not a bad mini game especially if you like seeing a lot of Miis in games.
Table Tennis is the next game. In this game you just move the Wii remote to move the paddle. This game is very simple, you just try to keep the paddle in front of the ball, and there is no need to swing. In a single player game your goal is to just return the ball 100 times and in a 2 player game it is to get 11 points. This game is not a that fun, I would have like to be able to swing the wii remote like in the Wii Sports Tennis game.
Pose Mii is another game which is not very fun. In this game you simply move your Mii on silhouettes before they reach the bottom of the screen. You can use A and B buttons to change their pose. It gets harder as you go on, but still not too exciting.
Laser Hockey is a fun game, especially with 2 players. In this game you control a paddle and you get to move it by pointing the Wii remote. In this game you try to hit the puck into your opponent's goal by twisting the Wii remote to strike the puck hard. Its very fun and very competitive.
Billiards is the next game and it is only ok. The controls take some time getting use to. This game would be better if there was more variety in the gameplay. You only can hit the balls in order and you only have 9 of them. Its fun after you get the controls down, but it gets old fast.
The fishing game on here is dull. I was hoping it would use the nunchuk so that you can actually reel in the fish. Instead you just pull the Wii remote up when the fish bite. The game has a small variety of fish that you can catch, and some fish will give you bonus points.
Charge is a game where you are on a cow and you hold the Wii remote on its side. You move the wii remote like a steering wheel to turn the cow and tilt it forward to run faster. Its not to fun to play especially in 1 player mood.
Tanks has to be the best game on here. In this game you control a toy tank and you get to shoot other toy tanks. This game can be played with the nunchuk as well so thats a plus. You control with the nunchuk or the d-pad and aim by pointing the Wii remote at the screen. Your mission is to move though the stages by defeating tanks before you lose all your lives. It gets harder as you go on because the enemy tanks get stronger and more numerous.
Overall Wii Play is not a game worth $50, and its only a good buy because it has a Wii Remote with it. This collection of mini games may be fun for awhile, but I don't think it will get much play time in your Wii.