Sadly, this doesn't seem to work in Firefox; pressing X doesn't do anything. I'll be happy to review it further once that's fixed?
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Thanks for the info. There seems to be an issue with the game losing focus - if you click anywhere outside the game window then the game is unable to receive any key/mouse input thereafter. I've just tried out a few other games on itch using the PhaserJS framework and they have the same issue. Looking into a fix, but if you refresh the game and just click once inside the window to start, not clicking anywhere else on the page, it should work. Please let me know if that works!