A gaming device including an interface unit configured to accept game play data from a player and a controller coupled to the interface unit. The controller includes a processor and a memory, wherein the memory stores payback data. The processor is configured to receive, via the interface unit, the game...http://www.google.co.uk/patents/US8162742?utm_source=gb-gplus-sharePatent US8162742 - Adjusting payback data based on skill
