Are the levels randomly generated? I have had some which made me rack my brain for quite a while, and then got a lot of easy ones right after. The concept is super fun, and despite it being so simple has a lot of fun ways you can go about it! The art is amazing, and there could be introduced more circle types, or more different movements for the circles. There could also be a speed up option as sometimes I am just waiting for the circles to fall into position. This could make for an amazing mobile game released as is right now!