That was the first thing I thought of when I saw the font.ASSASSIN'S CREED INFINITE
You are already dead.
I don't know about actual sales numbers wise, but Reach made the most money in the first day. Source.
I believe halo 3 has outsold in be good amount though in the end.
Edit: According to Wikipedia, Reach sold 3.3 million and 3 sold 3.7 million in the first month. Reach didn't have the same legs apparently. I'd imagine that was thanks to Call of Duty becoming the beast it is, and following up the mediocre ODST. I'm sure 4 will be a beast.