MIG-31

Is BioShock on PS3 the first example of a developer showing off the downloadable content before we get to see the game? The PS3 version's Challenge Rooms - announced and demonstrated to the press at E3 in July - were our first chance to see 2K's blockbusting underwater mind-bender in action on Sony hardware. The Ferris Wheel level, where players have to rescue a Little Sister by picking through the crumbling environment for electricity to transfer to a control panel, is a neat example of what 2K hopes to do to extend the game's appeal once the credits have rolled, but, shorn of the arguably vital context of the single-player game, it's a peculiar introduction. The assumption was that everyone has played BioShock.
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Source: Eurogamer

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