Very fun game! could very easily be developed into a full game and do very well. I only had a minor issue where for no visual reason I could see a non-locking marble would act locked and I could not knock it someplace and essentially waste a shot trying to move it and other issues like it being in the way. Not sure if it was just a marble I had not seen effected it or it was a bug. Still very good and had me go back in for the had mode.