I purchased the game for two reasons: zombies and a great Amazon rating. Unfortunately, I barely skimmed the reviews and ended up with a game that just is not my cup of tea. I would recommend reading those detailed reviews first, then come back here.

The "rail system" can be very repetitive, boring, and challenging for, in my opinion, all the wrong reasons. The graphics, even by DS standards, are rather poor. The shortness of the game and the replayability are slightly below the "meh" range. The story is... well, there really is no story, at least not one that makes enough sense to follow. Overall, the game is about rapidly tapping the screen and not really about thinking.

That said, it can be an adrenalin jolt, and it has zombies, so, while I did somewhat enjoy it, I was let down. I was hoping for something along the lines of a Resident Evil 4 meets Metroid Prime Hunters, and instead I got a very short mishmash that seemed like a scaled-down port of an old mid-90s arcade shooter. I loved those games circa 1996, but in 2007 I expected a lot more considering how many innovative games have been coming out for the DS.

I give it 3 stars for those reasons, but have to bring it down one more notch for the following. Because the game is so simplistic, the programmers could have at least made it longer by adding a couple more levels and not just the same levels with different difficulty settings. Also, the save system could have more options. The way it is set makes the short game challenging but not necessarily in a fun way. An option to save more often or to allow multiple saves for a player to test better strategies could have helped this game reach a wider audience. And again, even for the DS, the graphics are truly subpar.

The positives: it is easy, it is adrenalin-pumping, it can be challenging, and it is zombies.

Just figure out whether or not the very short, very old school "rail system" shooter-style game is what you enjoy.  (It's nostalgiac but not innovative.) If you're not into that, skip this one and wait until something more interesting is released.
I purchased the game for two reasons: zombies and a great Amazon rating. Unfortunately, I barely skimmed the reviews and ended up with a game that just is not my cup of tea. I would recommend reading those detailed reviews first, then come back here. The "rail system" can be very repetitive, boring, and challenging for, in my opinion, all the wrong reasons. The graphics, even by DS standards, are rather poor. The shortness of the game and the replayability are slightly below the "meh" range. The story is... well, there really is no story, at least not one that makes enough sense to follow. Overall, the game is about rapidly tapping the screen and not really about thinking. That said, it can be an adrenalin jolt, and it has zombies, so, while I did somewhat enjoy it, I was let down. I was hoping for something along the lines of a Resident Evil 4 meets Metroid Prime Hunters, and instead I got a very short mishmash that seemed like a scaled-down port of an old mid-90s arcade shooter. I loved those games circa 1996, but in 2007 I expected a lot more considering how many innovative games have been coming out for the DS. I give it 3 stars for those reasons, but have to bring it down one more notch for the following. Because the game is so simplistic, the programmers could have at least made it longer by adding a couple more levels and not just the same levels with different difficulty settings. Also, the save system could have more options. The way it is set makes the short game challenging but not necessarily in a fun way. An option to save more often or to allow multiple saves for a player to test better strategies could have helped this game reach a wider audience. And again, even for the DS, the graphics are truly subpar. The positives: it is easy, it is adrenalin-pumping, it can be challenging, and it is zombies. Just figure out whether or not the very short, very old school "rail system" shooter-style game is what you enjoy. (It's nostalgiac but not innovative. ) If you're not into that, skip this one and wait until something more interesting is released.