Ok well, this is a personal favorite of mine. A few months ago I didn't even know what "Jamzu" meant, and nowadays I am totally in love with the game.
The game, unlike most of the appstore, is a board game. It's a unique an original idea well executed. Taking inspiration on the likes of chess, checkers and backgammon, the developer of this game created a unique, challenging experience.
The gameplay is simple, there are two sides to it, the red team, and the blue team. Two types of pieces in the game, runners (move in a straight line, collored ones) and jammers (move diagonally, black colored), and a random factor, your moves depend on a dice roll, which determines how many squares a piece can move. That's pretty much it. Add to that a simple spin, jammers can rebounce, and everyone can control any jammer, and you have quite a challenge.
As any board game the game is very simple graphically, but mentally rewarding. The dev is trying its best to stablish a online server for online multiplayer (because, as of today you're only able to play locally), which I myself am waiting eagerly. But so far, believe me, you'll have enough challenge with the 4 different difficulty levels, and local multiplayer.
For 1.99 you get a truly unique game, no clones exist of this on the store, and it is truly something that should become a board game classic. I recommend you all just to go online and get it.
And if that's not enough incentive, the dev has taken the trouble to make something he calls "Jamzu Daily Double" to increase the ammount of people playing the game and enjoying it. As it is, the dev posts 2 board screens where the 1st person to choose the best move in that given situation, gets $15 just like that. So, now that I got your attention, that contests re-starts today @ toucharcade forums, so go check it out.