The problem with Tetris Worlds is that pressing up makes the place fall down to the very bottom without any chance of making it move left or right. Or maybe that isn't, I'm not sure. Even though I never press up, sometimes it acts like I did, which screws up the entire game, especially on the later levels. If they hadn't have made that stupid change in the controls, Tetris Worlds would have been enjoyable. But no. Some idiot had to go design that "hard drop" thing. And it isn't just on my Game Boy Micro, either. When I had the instruction booklet when I had the game before I had a Game Boy Micro, I had the exact same problem, and the instruction booklet does not explain why it does that. If I were you, I'd just get Tetris DX for Game Boy Color. It's basically the same game without the stupid hard drop thing.
up next: "Dexter's Laboratory: Deesaster Strikes!"