Tom Clancly's Rainbow Six Vegas Is currently free for Xbox Live gold members until Oct 1st. Rainbow operatives take to the chaotic streets of Las Vegas as an escalating terrorist siege in “Sin City” threatens to take world terrorism to new, uncontrollable heights. The future of global security hangs in the balance as you battle to defend classic Vegas locations and environments like Fremont Street, the Strip, and casinos. Download Tom Clancy's Rainbow Six Vegas on Xbox.com