Firstly thanks for the feedback!
So far, the game does have a couple of lines that are supposed to stretch off screen - poor game design and didn't get the time to fix some line intersection detection bugs. The difficulty curve is horrible especially when diamonds are introduced and does 2 things that the player is supposed to learn in a short period of time.
I do plan on fixing bugs, improving sound and music, and work on a full mobile and pc version with overall better design within a few months.