If you're looking for a nice change of pace from normal gaming, you can't go wrong here.
There isn't really a story, but apparently, wario is bent on making tons of money with all the microgames in this game. Did you buy it? Then you've made wario happy. There are many characters in this game, each with their own set of microgame styles. On that note.......
The gameplay is simple. There are doors you choose to determine what gameplay mode you want. It could be normal, hard, all mixed up, etc. After that, you're in an elevator room. The door opens up, which is when you start a microgame. Each microgame lasts for only a few seconds, which means you must fulfill the goal(for instance, the elevator would open and say "catch!") before time runs out. All the games are played with the joystick(moving either up, down, left, or right) and the A button. The games can be anything, like: catching a stick, shooting a ship, skateboarding, sports, and tons of other ones. Occasionally, after you beat around 10 games, it will speed up, testing your reaction time and skill. While this may sound hard, it actually makes it more fun. You have 4 lives. If you fail a microgame, you lose one life. When you lose all lives, the game mode is over.
The graphics are gameboy quality, mixed with some gamecube quality stuff. Put them together and you get some good visuals. The music can be catchy, and the way everything is put together(including the album which lets you pick games you like to play) makes this an enjoyable experience.
Overall, it's wacky, funny, speedy, and very strange, but when you get right down to it, it's very unique with lots of originality and a good sense of humor. I recommend this to everyone. Enjoy!