I actually likes the mechanis you made in this game, the effect you have when a line is being deleted/explode looks pretty neaet. I think the lines was a bit to scruffy, i think you should make them a little more smooth looking, also it would be cool if you could press a button/number to select the different lines so you dont have to move the move that much back and forth. All in all i like your idea with this game :)