A reel spinning gaming device comprises a plurality of selectable reels, where a subset of the selectable reels is the initial active reels. The actuating system is operatively associated with the selectable reels and generates an outcome symbol combination for the active reels. The prize controller...http://www.google.de/patents/US7361089?utm_source=gb-gplus-sharePatent US7361089 - Multi-reel slot machine with selectable reel play
