I doubt any existing Halo game would come to PC anytime soon MS simply no longer care about PC Gaming its all about Xbox to them or Win 8 App Store only XBLA level games. Halo2 servers are about to be closed forever. Those Steam registry entries are most likely because Valve are playing around with having console communities on their forums to get more console games into Steam than anything else.
Eurogamer got a response back from MS:
"We currently do not have plans to release any 'Halo' titles on Steam," said a Microsoft spokesperson in response to our query.
http://www.eurogamer.net/articles/2...logy-fez-and-dyad-outed-on-the-steam-database
Eurogamer got a response back from MS:
"We currently do not have plans to release any 'Halo' titles on Steam," said a Microsoft spokesperson in response to our query.
http://www.eurogamer.net/articles/2...logy-fez-and-dyad-outed-on-the-steam-database


