That is actually astronomical in sales, considering Halo 4 is on ONE platform, whereas Modern Warfare was on 3 platforms and only grossed 350 mill in one day. Halo 4 totally pwned opening day. But that didn't stop Company Town from shedding light on the fact to try and glamorize Call of Duty. I know, I am doing a CoD bashing. But, really, Halo 4 is doing substantial as one of the highest selling platform-based, exclusive first-party games since Super Mario Bros. 3, which had grossed over 1.7 billion dollars in sales for a single game, not part of the entire series, in sales (Call of Duty, eat that!). Seriously though, Halo 4 is going hard! And if it was on PC, and lord forbid PS3, the sales would have tripled to 660 million (and even more than that if it was STEAM-based). Pretty impressive for a rookie company like 343 to top, seeing how Activision has been around since the Dinosaur Ages of video games.
Why all the hate? I spread good news, and everyone is hating. It's a good thing that Halo 4 is doing astronomical in sales = more likely sequels will be released = longer lifespan. No sales = bankruptcy for company and no sequels.
Also, someone earlier was worried that Halo 4 wasn't selling well and I was just posting this to reassure he or she that the game is doing very well and there need be no worrying. So, STOP THE HATING and don't read the topic if you don't want to.