Honestly, I think this is a great concept, giving me 'I am bread' vibes, could make for a great 'Only Up' or 'Getting over it' esque game, The level design for a 'proof of concept' is pretty great, the wiener was pretty alright to control. I think you could have added an invert mouse setting for I am not used to an inverted mouse, the control over is was still good however. Even though its a proof of concept, sound effects of the sausage hitting different surfaces and physics-based puzzles would be cool, overall I like the direction you are going with this, Good luck!