I had to zoom in to 300% to read the instructions. The space bar causes the page to scroll down so you can't see anymore (in Firefox), and it's needed to start the game. I feel like this game wasn't tested in the Newgrounds browser window at all.
The resolution ONLY makes sense if you're playing on a phone, in vertical mode. So much wasted space. I don't even see a link to a mobile version so why would anyone do this?