In regards to the Crank/Gamer shared universe, there's the fact that in Crank Chev Chelios poses as a video game designer to his girlfriend, there's the
, and the fan theory that the events of Crank is actually the GTA-style game that Chev designed.
So it could be assumed that in this shared universe, "Crank" is actually another game similar to "Society" and "Slayers" and Chev Chelios is an associate of Michael C. Hall's character. Or maybe they're Steve Jobs/Bill Gates style rivals and Crank is a competing with MCH's games.