press right until you click right. When you have the menu, click outside of the game. Then you can just keep the game open (not in a tab, if the game isn't visible it pauses the game. Use a separate window to keep it going) and just do whatever else in the meantime
I'm having a little trouble with the controls (unless not being able to move and shoot at the same time is part of the game?) but other than that I like it! As of the controls, is that just the game or a problem in my case?
I'm stuck trying to find the last bit of fuel and im too stubborn to use the walkthrough, but otherwise this is a great game (coming from someone who doesn't normally like escape games)