"'Thief' is the grandfather of that type of game," said Roy following a demonstration of "Thief" at last week's Game Developers Conference in San Francisco. "It gave birth to all these big franchises. Now it's up to my team to prove that 'Thief' is still part of this. We want to convince you that we're part of your future, not just your past."___ Online: http://eidosmontreal.com ___ Follow AP Entertainment Writer Derrik J. Lang on Twitter at http://www.twitter.com/derrikjlang.