Well what can you say to another form of Tetris?
We all know the style, type and result of this. It is simple and effectively addictive.
That being said, i will admit that they did put some effort into this game. there are several modes of play, including a 'quest' mode. But more important, this version has a 2player battle mode. They did it in such a way that player 2 can download the game wireless. This is an excellent touch i think. It is already addictive enough in 1 player mode. But fighting others with this game is even worse. So sit in the sunshine by the beach and wait until sundown and then after you realise you missed watching the babes, and while you feel the intense sunburn you will realise that you are still willing to fight on. So be prepared to ddeal with serious Zookeeper addiction.
The graphics seem simple, but they do create a nice atmosphere to the game.
The sounds are simple and actually a little anoying (to me) and to be honest, for the game it is not really essential to listen to the sounds, so feel free to keep the volume at zero.
All in all, the game has a decent punch for a fair price, especially considering that this game is here from the DS launch day.