This demo is definitely a lot of fun to play around with. I really enjoy how smooth the movement is and how everything is based around physics. I've messed around with the physics in human: fall flat before (It's the only game that I can compare to this) and this demo's physics are much more fun in my opinion. I spent a couple hours playing around in the sandbox and eventually decided to make a video on it.

If you ever wondered what it would look and sound like to play 9 instances of this game at once: 

Before I knew it an hour had passed and well....

http://imgur.com/a/Q5Crt