I have a crash when game reaches level 21..
From quick reading the code it seems that nothing is planned after level 20. Was it on purpose?
Here's a diff file to allow it up to level 99 and handle the crash if you ever manage to get above that: https://gist.github.com/PpChailley/b3901a80de5310016ddc31c10a30872a
Do you have a repository where I can send a pull request?
