http://www.gametrailers.com/videos/e6yx6n/tf-xxi-tewt-0001--phantom-pain-mme
A cryptic video from Moby Dick. A secret code is flashed around 40 second mark showing-
PROJECT OMEGA
AI MATRIX: SECTOR07-A942
VR PROGRAM: PHANTOM_PAIN.MME
CONTRACTOR: MOBY DICK STUDIOS
SUBJECT: REDACTED
PURPOSE-
TREATMENT OF NEUROLOGICAL DAMAGE SUSTAINED IN COMBAT SITUATIONS
TREATMENT OF COMBAT RELATED PSYCHOLOGICAL STRESS
ENHANCEMENT OF COMBAT ABILITIES FOLLOWING IMPAIRMENT
IMPLEMENTATION OF ..::.|>..::.:
(finding this code properly was really hard from that video :) )
This is MGS 5, or at least an MGS game, no doubt about it. VR Missions are a MG staple.
The MGS Ground Zeroes trailer showed camp Omega-
http://www.metalgearsolid.be/images/the-phantom-pain-god-save-the-snake-02.jpg
And that video shows Fusion Reactor DIII D tokamak in USA.
http://www.youtube.com/watch?feature=player_embedded&v=tdQmPUI23mA
Its getting really weird. But probably the best teaser of any game yet!