Just click the green flag, and watch the triangle form! I HIGHLY RECOMMEND TURBO MODE!! (Shift+Green Flag) Mathematical explanation: Pick a random spot inside a triangle, and pick one of the three points of the triangle, and find the exact middle between those points, then after marking that point, pick another one of the triangle points, and find the exact middle between those distances, mark it, and repeat. Eventually, you will have created a PERFECT Sierpinski triangle. Math. Hehehehehe. -spotter64