Crush is a PSP platform-puzzle game that finds you squishing a 3D environment into a 2D platforms allowing you access to new areas and solve conundrums.
Once you've made 3D into 2D you then unlock secret items that were previously unobtainable in the 3D environment.
See, it makes your head hurt just thinking about it. Thankfully these new screenshots are easing the pain though.
Crush should be out in the summer.