Responding to the trends in the mobile market, Nintendo today announced their two first free to play games, both internally developed and both coming exclusively to the Nintendo 3DS. The first of these is, as promised by Nintendo last year, Steel Diver. Dubbed Steel Diver: Sub Wars, the game includes local and online multiplayer and what appears to be a fairly standard free-to-play model, with a basic set of maps and submarines available to players to begin with, and more being unlockable with transactions.