2K Marin posted a Q&A over at The Cult of Rapture about BioShock 2 multiplayer. First, there are no distinct ranked or unranked multiplayer options on any platform. All public matches, including those played with friends, will be ranked and posted to leaderboards. Meanwhile, private, invite-only matches will not post to leaderboards. The game allows friends to remain in the same team and employs a matchmaking system for finding opponents with similar skill levels. Game Servers An A Lot Of Fun The game doesn't allow players to kick others. 2K Marin suggests that players report any cheaters and griefers, quit and find a different match.

And now for the big one: BioShock 2 does not support dedicated servers or LAN play on any platform. According to 2K Marin, the development schedule didn't allow enough time to create a solid multiplayer component and implement dedicated servers and LAN play. The site reads, "We chose to spend the time we had creating a solid game foundation and unfortunately that did not include LAN play or dedicated servers." That's it.