The new 'Halo' game is making Microsoft a ton of money

Lots of folks are buying the new "Halo" game on Xbox One.

How many? Like, so many. Here's Microsoft's official word on it from a blog post:

One week after launching worldwide, "Halo 5: Guardians" has made history as the biggest "Halo" launch and fastest-selling Xbox One exclusive game to-date, with more than $400 million in global sales of "Halo 5: Guardians" games and hardware, pushing the franchise to over $5 billion lifetime.

So, a lot then? It's not actually clear, but however many copies of "Halo 5: Guardians" sold, it was enough to make it "the biggest 'Halo' launch" in history.

Since we don't have a straight up sales number, we can do some pretty good educated guessing based on what we do know.

Based on the $400 million number, we can do some quick math. The vast majority of people buying "Halo 5: Guardians" are buying the standard $60 version. So, what's $400 million divided by $60?

Approximately 6,666,666. That's approximately 6.6 million copies sold of "Halo 5: Guardians" in its first week. Not bad at all!

Yes, there are more expensive versions of "Halo 5: Guardians." There's the "steelbook" version of it, which costs $100. It looks like this:

There's the "Limited Collector's Edition," which costs a whopping $250 and looks like this:

And who could forget the Xbox One console bundle that comes with a copy of "Halo 5: Guardians?" That's $500 and looks like this:

But let's be honest: even with those versions factored in, Microsoft still sold a huge number of copies of "Halo 5: Guardians" in just one week.