Hey guys! This game is awesome! The build you uploaded has a few bugs, but playing from source works fine! I think you need to upload a new zip file from the latest source. The current build won't load because it's looking for a file called 'future.png' but in the data directory it's 'Future.png'. But that bug is fixed when you pull from github, so I think you should just cut a new build from what's in github.
Thanks!