Thanks for your feedback. I still needed more time to refine the difficulty. I wanted to put in EASY, MEDIUM and HARD equations levels, but with too much time spent, I released with medium equations as is. After the game jam I am going, to go back and fix the difficulty curve.
I just did a quick test I can see that it is running much faster than it was in my editor (was just too tired to test when upload it this morning). Thanks for the feedback, I try to get fix to that.
