While Interplay isn't coming out and saying it, all signs point to this being the Fallout MMO. Besides the Fallout-infused dev team, the company itself reaffirmed plans for the game last April. Even the logo bears resemblance of the Fallout aesthetic, and V13 could stand for either "V13" or if you interpret 13 as a 1337 version of "B", you have Project VB, the initials of which make the codename for Interplay's Fallout 3 (i.e. Project Van Buren) from before Bethesda took the reins. If Interplay's looking to ride next month's Fallout 3 hype train, we'll know more soon enough.