Today Sierra released Shiftlings, the inventive side-scrolling puzzle-platformer from independent developer Rock Pocket Games on Wii U. Shiftlings orbits around Purple Plop and Green Goop, a clumsy pair of extraterrestrial space engineers tethered together by a single air hose. By rapidly passing gas back and forth between their space suits, these cosmic custodians can expand and deflate in an instant, changing their size and weight to fit through tight spaces, activate switches, move heavy objects and bounce off one another. Those skills will be put to the test as the Shiftlings face an assortment of crushing, chopping, zapping and flaming environmental hazards while working their shift on an intergalactic reality TV show.