The html build wasn't loading for me so I wasn't able to play on Chrome or Safari. I'm able to play other html games though so this might be an issue you want to look into. Anyway, the visuals in the screenshots look really nice.
The issue might be related to the page trying to make the game full screen on play. I don't know for certain if that is the issue, but I noticed several other games that tried to go full screen had the same issue. There is a setting on the game's edit page to disable that.