Wait...so "jumping" was added because a bunch of people whined about it here? It wasn't part of the original developers' spec? Does that mean it does absolutely nothing? Seriously...What does jumping accomplish?
If the mouse cursor goes off the game screen, hitting the space bar doesn't launch missiles. This happens all the time. Clicking the mouse button should fire all weapons. Do you realize how hard it is to keep the mouse cursor over the tiny flash frame when you are using a touchpad on a laptop?
Fun...but: 1. I accidentally clicked off the game and when I hit the space bar the browser jumped to the bottom of the page. 2. Needs breaks, because there's really no time to hit E when you are constantly under attack. 3. It's hard to see some of the darker enemies.