| http://www.w3.org/ns/prov#value | - 013Dow K. HardyMethod and apparatus for providing player incentivesUS8512138Jan 19, 2012Aug 20, 2013IgtGaming system, gaming device, and method for providing a cascading symbols game which reuses discarded symbolsUS8523647Feb 13, 2007Sep 3, 2013IgtGaming method, device, and system including trivia-based bonus gameUS8523659Sep 28, 2012Sep 3, 2013IgtGaming system, gaming device, and method for provi
|
