These days, LEGO is for all ages. But not so long ago, it was exclusively targeted at kids. The AFOLs (Adult Fans of LEGO) always existed, but sets targeted at them are a fairly recent phenomenon.

LEGO has cultivated a fair share of video game collaborations over the last several years, from Super Mario Bros. to Animal Crossing. Among those collaborations, Sonic the Hedgehog has become one of ...