I loved the gameplay puzzle aspect, seriously this game is mega addictive and had me scratching my head thinking... oh wait.. no I messed up! Very much appreciate the restart button. I would of loved a try again button even if you clear the stage as I felt multiple times I could of got a better score :).
Would of loved to see some variety in colour themes, im not sure if that was implemented based on far I got. I will defo come back to play this some more at a later point :) Great job I loved this! Creating puzzle games I have learn't is incredible difficult, You did an amazing job of ramping up the difficulty at a steady pace!
If you get a chance please take the time to look at my submission :)