After just two days of availability, the number of gamers playing Modern Warfare 3 simultaneously on Xbox Live "set a new peak concurrency record".
That's according to Microsoft data passed along to Call of Duty publisher Activision, which said earlier today that Modern Warfare 3 has broken all-time entertainment launch records.
The game sold over 6.5 million copies in the US and UK alone in its first 24 hours of availability, generating a staggering $400 million.
2010's CoD: Black Ops was last week's most played game on Xbox Live ahead of Battlefield 3, which was the UK chart No.1 on Monday. No prizes for guessing which game is going to snatch both those titles next week.