Three new games have landed on Xbox Live Games on Demand this week. The games offer some vastly different experiences, so there should be something for everyone. For those who enjoy watching sweaty dudes pummel each other, UFC 2009: Undisputed is the game for you. If you prefer more discreet (perhaps even sneaky) violence, Hitman: Blood Money might be more up your alley. If, on the other hand, you'd rather have your singing talents mocked by a virtual Simon Cowell -- and who wouldn't -- it's Karaoke Revolution Presents: American Idol Encore 2 all the way. Each game runs $29.99 in North America. As usual, pricing and availability will vary in other regions.