Before Demis Hassabis was a master of AI hype he was a master of video game hype. The misleadingly named Infinite Polygon engine was one over hyped aspect of the over hyped and much delayed game Republic the Revolution. I think it actually turned out an ok game but is a notorious example of over promising and under delivering in the games industry.
There is so little information about the Infinite Polygon Engine that my comment above is now the #1 Google search result for "Infinite Polygon Engine" (with quotes), even above that Eurogamer article. Without quotes, my comment is only #2. :)
Compare these claims to the game as reviewed when it finally shipped some 2 years later. It probably did do some reasonably clever and even innovative things but it never really lived up to the hype.
He's a smart guy but his real genius appears to be drumming up breathless and relatively unskeptical media coverage, something else he probably learned from Peter Molyneux who also made a career out of some genuinely innovative games that nonetheless rarely quite lived up to the extravagant claims made about them years before they shipped.