Bioshock 2

BioShock 2 is a survival horror first-person shooter video game, being developed by 2K Marin and 2K Australia for the PlayStation 3 and Xbox 360 video game consoles, and the Windows operating system. It is the sequel to the critically-acclaimed 2007 video game BioShock. The game is scheduled for simultaneous release on February 9, 2010 for all platforms.

The player takes the role of "Subject Delta", the first Big Daddy and prototype for the Big Daddies seen in the original game. The character possesses superior speed and intelligence to other Big Daddies, as well as free will. As such, the player uses the Big Daddy's drill and rivet gun as weapons as well as some other weapons found across Rapture, though the drill does run out of fuel. The weapons in the game will have several types of ammo, similar to the first game. Alternatively, in contrast to other Big Daddies, the player may also use plasmids, while "upgrade trees" will provide unique ways to upgrade them. A new feature added is the ability to dual-wield plasmids and weapons at the same time. Further Big Daddy abilities found in the first game, such as performing a shoulder dash, will also be an option.
The player will also be able to step outside the city of Rapture into the ocean due to the diving suit they wear. Here the player can explore the ocean floor, recover from fights, marvel at the city from the outside and pick up special items. As seen by the demo, some of the special items include first aid kits, EVE Hypos, and special sea slugs. These sea slugs create ADAM, the genetic material for the production of Plasmids. One of the game's major enemies is the Big Sister, a Little Sister-Big Daddy hybrid. There will be several Big Sister encounters throughout the game, and she will be the most difficult enemy faced by the player in the game. The Big Sister attack will be spontaneous and unplanned, but if the player has a Little Sister with them at the time, she'll give you a warning that the Big Sister is coming. Unlike the Big Daddies, she is extremely quick and arguably more powerful, able to extract ADAM from her enemies through a harvesting needle, straight into her bloodstream, which fuels "telekinetic abilities beyond anything previously thought possible".
As a "rogue" Big Daddy, players will attempt to capture the Little Sisters from other Big Daddies who roam Rapture. Once a Little Sister is caught, the player will again have the option of choosing the fate of the Little Sisters. Harvesting remains a possibility in order to gain more ADAM, but rather than rescuing the Little Sister, players will instead be allowed to adopt them. With this option, Little Sisters will ride around with the player's Big Daddy, and will look for ADAM to harvest from corpses; in a manner similar to the proving grounds area of the first game, the player will then need to ensure that Splicers will not harm the Little Sister as the harvesting process takes place. The Splicers will not damage the Little Sister, but will delay the process of gathering the ADAM. This will prolong the time it takes for the little sister to gather ADAM, allowing more splicers to attack the player and the Little Sister. Rescuing, while not initially an option for the player, will become available at some point in the game

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http://www.bioshock2game.com/en/

CPU - Pentium 4 2.4GHz Single Core processor
System RAM - 1GB
Video Card - 128MB RAM ,
Hard disc space - 8GB free space