Sorry, that's a bug :( Just so I can know for sure, did you hit the WebGL fullscreen button (at the bottom right of the game window) before playing? If you did and it still didn't work, please notify me as soon as you're able.
After double-tripple-click on fullscreenbutton it's work, i'm tried this before but i'm was not so persistent)
Good game and very hard. I like introduction part <3
