Fun time-waster, a puzzle game in nearly the most literal sense of the word... lol. It's a puzzle, with zombies, how could you go wrong? Unless you don't like puzzles. Or zombies. Then, well, you could go very wrong.
In all seriousness, besides being a puzzle game, there is a fun little extra to it. As you piece your puzzle together, you have a simple top-down shooting game happening at the same time. ( It can be turned off if it becomes too distracting.) Mind you, the shooting aspect is rather simple... An occasional zombie shows up, use your keyboard to line him up and shoot him before he breaks down your barricade. At regular timed intervals, a large group of zombies will show up in waves... There's a small sense of depth there, and things can go wrong. As you put the puzzle together, you'll randomly earn cash to stock up on bullets and grenades, even the ability to add more sections of barricades. The shooting part is really very simple, but I'll hand it to the developers- it's a small thing like this that can add quite a bit of fun to the game. It's really only towards the end of the game, (as you complete tiers of the puzzles, the puzzles become broken down into more pieces,) that the shooting game can lead to death. (game over if your soldier dies.) Even then, your soldier dying is usually more based on a combination of bad luck, (not getting pieces laid down that earn you money to restock,) and bad timing. Again though, if the shooting aspect of the game isn't your cup of tea, it can be turned off. Kudos again to the developers for not turning off achievements if a player does so... You'll still earn an achievement for finishing the puzzle regardless of whether you choose to participate in playing the shooting game aspect.
Before selecting the puzzle, you can also enjoy a game of shooting zombies, as well... Even achievements for playing this part of the game.
Perhaps the only major negative I've found is grabbing pieces from the floating current of water that surrounds the top and sides of the board can occasionally be finnicky... It's not HORRIBLE, but I've certainly had my share of trying to grab a piece (usually in the higher piece count boards,) only to have to keep grabbing several times before landing the one i was trying to get... It's rarely been anything more than a slight annoyance.
Overall, this quickly became my favorite time-waster/ "I only have 15 minutes to play something," game for quite some time. The shooting part was a pleasant surprise, but I've been known to turn it off to just enjoy putting together the puzzle without the distraction.
It should be noted that while very cartoony in its art style, a couple puzzles may not be entirely appropriate for the "young'uns," depending on just what your level of tolerance is in regards to what you allow your kids to view.
For a jigsaw puzzle game, it's a ton of fun. I enjoy the zombie apocalypse stuff as much as the next guy, so when I found this little gem, combining zombies and puzzles, I couldn't have been happier.
Currently on sale for $2.37... At that price, you should be jumping on it!