AppAdvice has teamed up with Duello Games in order to offer you a chance to win one of five promo codes for iSlash ($.99) for iPhone and iPod touch.

iSlash is a fast-paced slashing puzzle game where your finger is your weapon, and dexterity and timing is just as important as speed.

iSlash requires you to carve down a variety of shapes as fast as humanly possible until there is almost nothing left of them. The catch is that the ninja stars bouncing around inside of each of the shapes must remain in the same section and mustn’t slice through them, otherwise you’ll have to start all over.

A Shape With Metal Walls

The first set of shapes are relatively easy to carve through, while later ones feature metal edges that can’t be swiped through and much quicker stars. But don’t worry, power-ups are introduced later in the game to help you conquer these more complicated shapes.

Each of the 130 levels feature a star rating and a total score, which are based on how fast you whittled your shape down, how many slices it took you, and the percentage that was left. The game also features Game Center integration, complete with leaderboards and achievements.

To have a chance at winning one of two iSlash promo codes, simply hit that blue tweet button near the bottom of this page or retweet this post from your favorite Twitter app before 11:59 PM PDT tonight (May 30th). We will then search the Twitterverse for all of the retweets and randomly choose our lucky winners. The winners will be notified via Twitter, so please be sure to follow us so we can send you your promo code via a direct message.

Non-Twitter users and those of you who want to increase your odds of winning can simply leave a relevant comment below before 11:59 PM PDT tonight to have a chance at winning one of the other three promo codes.

Feel free to participate in the giveaway via either or both methods. Only one entry per person per method is allowed, totaling up to two entries per person if using both.