Via Bungie's Weekly Update:
''In closing this week, Bungie would like to give an official shout-out to the fine men and women at High Moon Studios. For a while now, we’ve kept our love secret, but it has become known that they’re working with us. Please join us in welcoming them to the party!''
Source: https://www.bungie.net/en/News/News?aid=12965
Some of High Moon Studios' previous work:
Darkwatch (2005) for the PlayStation 2 and Xbox
Robert Ludlum's The Bourne Conspiracy (2008) for the PlayStation 3 and Xbox 360
Transformers: War for Cybertron (2010) for the PlayStation 3, Xbox 360 and Windows
Transformers: Dark of the Moon (2011) for the PlayStation 3 and Xbox 360
Transformers: War for Cybertron (2012) for the PlayStation 3, Xbox 360 and Windows
Deadpool (2013) for the PlayStation 3, Xbox 360 and Windows
Call of Duty: Advanced Warfare (2014) for the PlayStation 3 and Xbox 360
Source: http://en.wikipedia.org/wiki/High_Moon_Studios#Games
