Friday, March 02, 2012

Amazon Appstore's Free App of the Day for 03/02/2012: Gravity Burst has promised to make a paid app free every day in the Amazon Appstore, and today's app is Gravity Burst.

Gravity Burst is priced at $0.99 in the Android Market, and is normally priced at $0.99 in the Amazon Appstore. As we've noted before, there are sometimes differences in pricing between the two marketplaces.

Gravity Burst is described as follows:
Gravity Burst is a 2D physics-based arcade game that requires you to shoot enemies from your orbital base, rather than chaotically flying thorough the cosmos firing at everything. Using the slingshot effect of other planets, carefully launch your missile to take out all enemies by pulling the trigger only once. This is a much more cautious and calculated approach.

Don't Fight Harder; Shoot Smarter

The answer is physics. By aiming your missile strategically, the gravitational pull of the planet will keep your missile in orbit--unless, like Newton taught us, an external force is applied. In other words, don't crash into something. Your enemy lingers somewhere among the planets. If you miscalculate, your missile may crash into the planet or other obstacles before taking out the enemy aircraft.

Carefully assess your environment when planning your attack. Determine what could get in the way of your missile's orbit and try to navigate around it. All obstacles and enemy aircraft remain stagnant, so you are not aiming at a moving target.

Staying in Motion

With more than 90 unique levels, two game modes, and three exclusive bonus levels just for Amazon customers, you've got plenty of missiles to keep in motion. Additionally, as you progress through levels you'll earn unlockable content and achievements.

Note: Not compatible with LG Optimus. BROADCAST_STICKY and INTERNET permissions are required for apps that leverage Adobe AIR.
Gravity Burst has a rating of 4.6 stars in the Android Market and a rating of 3.4 stars in the Amazon Appstore.

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Gravity Burst's 4.6 rating in the Android Market is based on only 9 ratings. Meanwhile, the Amazon Appstore rating is based on 17 ratings. That said, there is also a free Gravity Burst Lite in the Android Market with a 4.1 star rating over 63 ratings. We'd say it's probably in the high 3s, trying to average the values.

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Those who are considering "buying" a Free Amazon Appstore app might want to consider what it means to developers. opened up the Appstore despite a lawsuit by Apple, which has previously trademarked the term "App Store." Microsoft has filed an appeal against that trademark, saying the term is too generic. has responded to the lawsuit in the same manner.

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