Another zombie game, you're thinking? Well, no, not really. At least, not a TYPICAL zombie game by any means.
As the title states, it's a puzzler - no hybrid zombie shooter-♥♥♥-puzzler. Just a puzzler. So why the zombie inclusion? For the most part, it's not relevant really at all. It could be anything that takes the place of those zombies, but the important thing is it's a pretty good puzzler.
It's based on the "match 3" style of puzzle, and you start with a full grid of objects/zombies (a bit like Bejeweled) - and just like Bejeweled, once you clear a group, the spaces are refilled. That's about where similarities end.
Your basic aim is to clear the zombies on the board, and the way you clear a group is to surround them with a colour-coded group of your little guys, doing their utmost against the contagion (go little guys!) As the game progresses, slight variations and hurdles are introduced to up the ante. Difficulty is kept nicely linear, and paced just right. I could go into deeper description of these hurdles, but I think doing so would rather spoil it for you. There's not much else to say about the mechanics - it does what it should rather well indeed.
The levels are tied together in a "story mode" format, and to be frank, the story is pretty rubbish, and terribly amateurly written. However, as this is in the form of text on-screen, there's no awful voice acting to listen to, and it skims along quickly enough, so that you soon progress onto the next level with a minimal of fuss. In short, you can easily ignore it, and it impacts the game in no other way than this.
So, even if you've completely had your fill of the over-used zombie craze, this is a worthy purchase, especially if "matching" puzzles are your thing. I picked it up in an indie bundle and was pleasantly surprised - so much so that I replayed it as soon as I'd finished the story mode. It's not exactly very graphically intensive either, so a moderate/low PC should run it capably too.
All in all a pleasant little puzzler that very much does it's own slant on a formula, and well worth the purchase. As always my metric is price, and I'd say this is worth a good £6-7. If you aren't so into puzzles, then I'd still recommend it, although you should adjust the price accordingly.