I didn't play through a lot of the demo because I found the controls a bit counter intuitive. I didn't realize that you had to aim the magnet with the mouse until I remembered seeing that in you video. I also found myself reaching towards the mouse every time I had to aim the back to the keyboard as I am right handed and used the arrow keys to move. Also I'm used to having the up arrow and w buttons in addition to the space bar preform jumps so it took a bit of getting used to using the space bar exclusively. The placement of the buttons for polarity switch and the magnet pick were easy to mix up. I often found myself switching polarity when I wanted to pick up the magnet. I know there was an options menu to remap the controls but I didn't feel like doing that for a game that made me frustrated within the first minute of the tutorial. Aside from the button mix up the robot felt very good to control and the premise seems fun. I can't wait to see this concept refined.