Namco Bandai and TimeShift developer Saber Interactive are developing a new shooter named Inversion.
The third-person shooter takes place during an invasion by the alien luchadores Lutadore, which happens to coincide with the appearance of random "bubbles" of anti-gravity or gravitational vector change. That means that at various times throughout the game, you'll enter an area and start floating, or be flipped over as the ceiling suddenly becomes the floor.
The player, as cop Davis Russel is armed with a Grappler weapon that allows the manipulation of gravity to move giant objects around. This permits the player to move enemies' cover or make their own out of items in the environment.
Inversion will ship sometime in 2010 on Xbox 360 and PlayStation 3.