Shiftlings from Norwegian Rock Pocket Games started life as a game jam concept. Humble beginnings for a game that is now being targeted for release on PS4, Wii U, and Xbox One. The physics based puzzler is said to include around 50 levels and 3 hours worth of gameplay and Rock Pocket Games are targeting a release this spring. The two characters on screen are connected by an air hose and thanks to this you can shift their size. The two air hose-connected "alien space janitors" are unknowingly the stars of a popular intergalactic reality show.
Shiftlings also has a Steam Greenlight campaign that's currently running if you prefer your shifting on a computer.