A pause menu is definitely on my todo list, and I really wanted to display the level you're on, as each level has a title and I put a lot of thought into them despite the fact no one but knows them! I've been kicking myself for the last couple of days about not including a WebGL build, I had a really poor experience when I tried it for the GMTK jam and it cost me a lot of time, so I skipped it. Of course when I tested it later it worked first time, but you live and you learn!