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Physics can be a great way to enhance your game.

The problem is that implementing physics in your game can be extremely challenging, but I found a couple of great examples showing how to enhance an iPhone or iPad game using radial gravity with Box2D.

The examples are from Nick Vellios, and as you can see in the example above they show how to implement radial gravity on an object so that other objects are drawn towards it (much like how planets are drawn to the sun).

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Press releases can be a good way to get free buzz for your app, the idea with a press release is that you write it, and it gets picked up by some large relevant sites or aggregated by many smaller ones.  I’ve seen it work wonders for some.  I was reading through a few messages on app promotion, and it seems that many developers are falling into one of the older internet scams of paying for submission to free press release sites.  Most free press release sites are not worthwhile. These costly services will typically offer free submission for hundreds of press releases.  Some are even worse, charging for submission and then simply placing your press release on a single complete insignificant press release site.

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I’ve mentioned the excellent Cocos2D open source 2d iphone game engine many times.  The engine itself comes with many examples of the different features available, but something that comes up frequently is that people want some example games to look at it.  Here are 5 terrific examples.

1) Gorillas – I’ve mentioned this game before, it’s a great example of a "Worms" type game, and has been around on many different platforms.

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After being extremely disappointed by the iPhone Games Projects book from the same publisher, I was a little hesitant to check out their latest book, iPhone Cool Projects.  I thought that it might be another "cash in on the iPhone craze" book. Fortunately I was pleasantly surprised.

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