When BioShock 2 was announced, the game had the subtitle Sea of Dreams but now 2K Games has decided to drop the Sea of Dreams from the name and just calls it BioShock 2. A spokesperson for BioShock 2 says that Sea of Dreams sounded a bit silly so they won’t be using the subtitle ever again. The same BioShock 2 rep also says that BioShock 2: Sea of Dreams won’t be getting a co-op multiplayer mode as we hoped.