Tuns out your linux build lacks all the sounds! Which explains why it weights so little compared to other builds.
Other than that, bowling mechanic is cool, and I see where you were going with special balls. Maybe I'd do some clearer goals for rounds (i.e. in "Clover Pit" you have X turns to score Y pins) and several separate rounds, which would progress game and make it harder and more complex and interesting. Overall, pretty cool, I love bowling 🙂