Game start with 8 color group (3-circle) for 24 circles on the edges of Octagon (8-edge Polygon). Player get complete game when each edge of Octagon have the same color by change the color circles so as not collide with each other using easy rule:
1. Tap the circle to move it to opposite position.
2. Tap the corner of Octagon to change two circles beside.
Have fun with yourself and can compare with other players about the records (time or number of touches to complete the game).