Tetris Attack is a game that's all about matching up colored tiles to make them disappear before they hit the top of the screen and ruin your day. After a while the game speeds up, and your reflexes slow down (well, they seem to, anyway). Wouldn't it be great if there was some kind of way to arrest the geyser of blocks so you could think about your next move?
Other than pause, smart guy.
Right before your game ends, you'll notice that the tiles do a little panic dance just before your game ends and you off pouting in the corner. But! That's the time to strike!
Right when the tiles are doing their Dance of Doom, you need to make a clear of 4 or more tiles or a chain of at least two clears. Do that, and you'll hear a voice yell, "STOP!"
Then you'll notice the little clock-guy over there on the right. He gives you a few seconds where the stack doesn't move and you get to take a little breather. Keep the blocks just licking the top of the screen while you make combos and chains and you can extend the stop for quite some time.
Just make sure you have a clear waiting in the wings so you can reinstate the STOP! when the time runs out.
Oh, and this works on Pokémon Puzzle League, Puzzle Challenge, and Planet Puzzle League.