Part II. Using App Connectivity with Core Location to Make Games Social

The iPhone is fun, from code on up. Screens flip, slide, and spin when they change state. App-buttons jiggle. Everything about it seems to insinuate light-heartedness. Even basic navigation feels like finger-painting.

But fun on the iPhone has an interesting duality to it. There's the self-contained kind of fun that comes from gaming: graphically rich, challenging, time-wasting, brain-bending, and solitary. With the headphones in your ears, games help you relax into a world of your own.

But iPhone-fun can also be completely extroverted: iPhone as social lubricant. It lets you mass-text, conference call, IM, Skype, and share location, so that you can better integrate your world ...

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