I bought it On-Demand like most of my games. Now, when I buy a game On-Demand that means everyone on the console can play it, right? NOPE! He tried to just start the game, and it said "An Xbox LIVE account which has purchased the game is required". WTH! My brother is a bloody 3-year Xbox LIVE member?! Why can't he play? Seems you've never had to purchase on two accounts before! What is wrong?!