The game normally sells for $15. Meanwhile, sequel Halo 4 is currently on sale for $10 at Best Buy through the end of the week. Might & Magic: Clash of Heroes was free on Xbox Live October 1-15.

They also revealed that Halo 5: Guardians made $400 million in global sale, including sales of Xbox One bundles with the game. So, this is sufficient information to establish that the game had ...