The Funny Face trick works best when you have a deck of cards. The idea is that your mark will pick a card, you'll ask to see it, and then you'll draw a face on the DS screen that "magically" recites the chosen card. It doesn't take too much to figure out that how you draw the face determines what the DS says. Sorry for, you know, ruining the trick. To its credit, the application does a good job of teaching you how to keep talking during the trick and distract your victim. You also get a "bonus trick" called Vanishing Card, where you select five cards. The DS asks you to focus on one card, and then it makes the card disappear. Magic!
It's hard to complain too much about something that's only selling for two bucks, but Master of Illusion Express: Funny Face feels like the sort of thing that would normally be a free demo designed to entice people into picking up the full package. Even if you're looking to spend the initial 1,000 shop points you get for buying a DSi, you're better off without it.