There seems to be no way to maximize the game screen, that is, to make it take up all the available space in the browser window. This is clearly possible, since the game's loading screen is maximized. In fact, the game does grow or shrink depending on how much space is available, but it won't grow past a certain point, leaving quite a bit of space free on a high resolution, large display.
My eyes hurt from playing the game. I am having tons of fun, but why can't I make it bigger?
I've tried the "flash game maximizer" plugin for firefox, but it doesn't seem to play well with Glitch.