Guys Came Across this game which i think is cool....Attaching the screenshots.
In Prey, players enter a living spaceship which enslaves alien races and devours humans for lunch. Prey turns the first person shooter genre upside-down with awesome new game play features like wall-walking and gravity-flipping, making for intense single-player and multi-player experiences.
Prey is built on a heavy modded version of the Doom 3 engine and is developed by critically acclaimed developer Human Head Studios under the direction of 3D Realms.
FEATURES
Gravity Flipping
Manipulate gravity by shooting special targets located throughout the sphere. There are also zones in the world where gravity is automatically flipped various directions.
Wall Walking
Wall walk surfaces allow Tommy to traverse the sphere?s walls and explore otherwise unreachable areas.
Death Walking
Death isn?t the end. After losing all of his health, Tommy enters the Death Realm. He must battle the wraiths of fallen spirits to regain both health and spirit energy before returning to his living body.
Spirit Mode
Tommy can use the power of his ancient ancestors to leave his body and enter a spirit form. Spirit mode allows Tommy to sneak up on enemies, as well as overcome the sphere?s many obstacles.
Other Features
Portal technology adds a new dimension to game play, allowing enemies to appear out of thin air, creating new and completely original puzzles and employing advanced game play techniques.
Multiplayer games take complete advantage of unique game play styles of Prey, as players walk on ceilings and walls while the maps gravity flips from side to side.
YOU CAN CHECK THE VIDEOS OF THE FEATURES ON:
http://www.ati.com/technology/crossfire/games/prey/index.html
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