Nice work! I really love how compact the game is. The visuals are great, too.
You've got the game loop down, too.
A little bit of confusion on whether I had water or fire selected: at first I thought they each had their own separate spot on the bottom right menu (eg fire right, water bottom) and just had very similar icons. I'm guessing it's whichever icon is in the left spot is the current selection? I little more feedback on whether fire/water is selected may be good (even if it's just an arrow pointing to the currently selected one)
Otherwise, really good work! I checked your profile and couldn't see any other games, so I look forward to seeing any you make in the future :)