The absolute worst version of the tetris main theme I've ever heard. Other than that it's also kinda ugly overall.

If you are looking for a Tetris game to carry around to play at a moments notice on your Game Boy Advance, you could do worse than Tetris Worlds. It is a fine addition to the several handheld editions of Tetris and sports several game modes to keep you busy if you get bored of the traditional gameplay. It's nothing groundbreaking or innovative, but sometimes that is enough.

As someone else said:
"The whole fun of the GBA version is seeing what fucked up early CG animal is gonna show up in the background next".