Likewise the games themselves. The best you can say is that they're over quickly. There are flicking games, scribbling games, line-drawing games, bowling games, and games about positioning something on the touch-screen to catch or fire something off onto the top screen. Sit back from the computer for five minutes and make up, in your head, a basic activity that involves little men, bombs, a time limit and a stylus - you'll probably come up with something just as good as the best on offer here. (I did: in my game, you have to scribble "I will not ask the player to blow into the microphone to defuse bombs" 100 times or until I am satisfied you have learned - whichever comes first.)