Flow game online has made it to the top popular idle games on mobile web because it combines addicting matching mechanics and puzzle challenge. This touch-friendly logic game takes its difficulty to the next level. The goal remains the same. Connect dots of the same colour and cover all cells on the board. However, this colour matching puzzles offers six difficulty levels, which increases along with the board size and the number of dots. Put your wits to test with this fun brain-teaser online.