Tiny & Big: Up that Mountain is a free prototype released in March 2010, and the first thing ever made by the team that founded Black Pants Studio.
It shows Tiny, the games protagonist, as he struggles to go after his nemesis: Big. The gameplay is very heavy on physics and features a back then pretty novel object cutting mechanism. It also comes rendered in a comic-book like art style.
Please note that the state of the prototype doesnt reflect the quality of the later commercial release Tiny & Big: Grandpas Leftovers. Its a proof-of-concept for the game mechanics and the art style. If you like it, please consider buying the follow-up, because it works much better in every way!