There's a reason this game is so cheap ( i found it for about $10-15)
It's a terrible game! Now, I almost never say that about games (most have something redeeming in it) but I am a die-hard Tetris Fan-Girl, and I found it, quite frankly, embarressing!
Just we're clear, this versian is for the GBA.
I picked it up, because I was excited to see that someone had finally made a color tetris game. When I turned it on, I noticed several things which disappointed me right off the bat.
There are several modes of play in this game, and only one which is "Plain-vanilla" tetris. Most of the modes are fun for a time, but only the classic tetris is even worth playing.
There are a few redeeming factors, but overall, being able to switch out your next piece (and "Hold" a favorite), and FINALLY being able to "quick drop" your piece instead of waiting as it drops, does not make up for the forgiving difficulty and distracting colors and backgrouds of theis game.
Several things prompted me to rate it so low.

One, there is no score-saving. Heck, there isn't any way to score the game at all! What fun is it when you can't even brag about your high score?

Two, the "infinate rotate" feature made it so you can continue to rotate a piece endlessly until you figured out where you wanted to set it.

Three, the "shadow block" makes it so that you can see where you your piece will drop. Makes the game too easy.

Those three items have effectively "broken" tetris for me! I promptly took the game back and requested a refund. Avoid this versian of tetris at all costs! If you must have a tetris fix, it's possible to find
the original for the gameboy under $10. (Even if it does stick out of your gba sp two inches!
Don't mess with the successful tetris formula!
Until a new versian comes out that addresses these issues, i'm sticking with my gb tetris!