Cute little "avoid the wall" game! As some people have mentioned, getting a completely black screen when you touch a wall (or win for that matter) made things a little confusing. Something less intrusive, probably like a semi-transparent screen with text, would be much better. I think it'd be helpful too if you moved the cursor back to the start when you touch the wall too, so the player doesn't have to get hit by the flickering when trying to navigate back to start.
Also I think I ran into a bug where part of level three (when you have 3mil viewers) was outside the viewport, though I also found that you can bypass the entire level just by moving the cursor to the exit. You got the foundation of a neat little game here, keep up the good work!