This is a new version of the Bet Rock N Roll game for MyVegas mobile. There is an added bonus round only available on the mobile game. When they launched the original game last year players were upset it did not include an extra bonus round so they added one just for the mobile game.
MyVegas can get monotonous because of the repetition in some of the games but this dice bonus is great. They should incorporate more interactivity like this into the game to keep it interesting. See the bonus round below. It plays similar to one of my favorite slot machines in the past year – the Hot Roll bonus round.