Here's some gameplay of the PlayStation 4 2D/3D Puzzle/Platformer, Contrast.
"Contrast is a 2D/3D puzzle/platformer, set in a 1920's vaudevillian, film noir dreamscape, full of cabaret, illusion and performance.
You play as Dawn, the imaginary friend of a little girl, Didi, and you have the power to shift from the 3D world into a 2D shadowscape, by becoming your shadow.
Didi’s family isn’t perfect – her mother is a cabaret singer focused on her career, and her father isn’t around any more. As her imaginary best friend, you must use your shadow shifting abilities to solve complex puzzles, in order to help Didi investigate the secrets that lie behind her troubled family."
For more information, check out the official site: http://us.playstation.com/ps4/games/contrast-ps4.html