I can see where this could be an amazing game, that has style and creativity (like all Double Fine games), but as it is, the controls are terrible. I spend more time dying trying to jump over a gap then I do actually playing the game. Im right near the beginning still, and already too frustrated with the controls to bother continuing. The definitely need to add on screen touch buttons for your movement and actions, as what is there just doesnt work well. I ran into the same problem, though not as bad, with costume quest. With these changes, I can see this moving up to a 4.5 star rating.
Hardware Requiem about The Cave, v1.2