Monument Valley was arguably one of the best-selling apps on iOS last year and has since become a worldwide phenomenon across iOS, Android and on Kindles.
With an app that won almost all the mobile gaming awards you can think of you expect that after a year it would make its developers millionaires? Or at least set them up for the next few years? You'd be wrong.
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In a fascinating blog post, the Monument Valley development team have revealed the true cost ($1.4m in case you're wondering) required to make a best-selling game for iPhone and iPad.
