Gravity Daze is a game for the PlayStation Vita, one that utilizes gravity manipulation as its main gameplay mechanic and is being developed by Sony and the creator of Silent Hill himself, Keiichiro Toyama.
Sony have released a quick video with Toyama covering the basics of the game and describing the setting. Players take control of the game's amnesiac protagonist who has the ability to manipulate gravity.
Hitting the R button brings the player into a zero gravity state while using the PSVita's gyroscope controls the camera, hitting R again will turn wherever the camera is directed at into the ground. Meanwhile, the L button will revert gravity back to normal.
No release information has been revealed by Sony at this point.