In October 2010, DOOM was inexplicably pulled from the Xbox Live Arcade catalogue. Zenimax would later comment that the reason for yanking DOOM was due to the expiring rights of the franchise.
Well, it looks like Bethesda and Zenimax have figured things out, because DOOM has officially returned to the Xbox Live Arcade. Everything is back including the campaign, the online multiplayer, the co-op, and the leaderboards too. It is up on the XBLA right now for 400 Microsoft Points.
[SOURCE - BethBlog.com]