Interesting mechanic you've got there. Never seen such a mechanic being implemented in a game before, so kudos on that. I have to be honest and admit that I got stuck in the room after the elevator, where you need to drive a "fan"-like structure to lower something down? A few times I tried and still couldn't manage to gather enough mass to solve the puzzle, probably I am losing too many of them along the way.
A few other issues such as no sound that makes the game feel awkwardly silent, and the physics-based movement some things feel like not responding to player input, making a rather frustrating experience when that happens.
But anyway, nice idea for a game, with more polish this might go somewhere! Keep on the good work!