Game isnt working

[inkoalawetrust]

Every time i load this game (www arcadeprehacks com/game/25302/defeat-the-aliens html (i cant post links so you will need to remove the white spaces and replace them with dots)) it only shows a grey screen i tried running it on Chrome and Firefox and it still doesnt work the only difference being that Firefox shows a blank space where the game is meant to be can somebody fix this or atleast explain why its happening ?

Edit:Only the unhacked version works.

[Xnite]

Thanks. I'll get it fixed.

Edit: Fixed