Video Interview: Ken Levine outlines the origins of Columbia

The Irrational boss on Bioshock Infinite swapping the deep blue sea for the clouds

Irrational head Ken Levine recently came over to fair London-town to talk about his latest flying monstrosity and eat pizza with adoring journalist-types.

We had top men in attendance, and got the full run-down on some of the ingenuity being mainlined into Columbia. Witness this video as intriguing proof of the encounter.

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"We'd said what we wanted to say about Rapture." Explained Levine. "We kicked around the idea of what if we were to keep the core principles of Bioshock, but everything else really was up for grabs..."

Balloon cities, wife-beating mechanical birds and rollercoaster transport systems? Next year can't come soon enough.