Three years ago, Igor Pusenjak and his brother Marko unveiled Doodle Jump, an addictive game that quickly became one of the biggest hits at Apple's App Store. It turned them into millionaires.
So, what are they doing for an encore?
While most other developers might try to follow the success of one app by rushing out follow-ups, the brothers Pusenjak have been content to ride Doodle Jump as far as that will take them.
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