Click a number on the left side of the screen (or press a number key on your keyboard) to shoot a particle. When it's near the ball, click that number again to make the particle explode and push the ball. Your goal is to blast your ball into the portal!

In later levels, you may only be restricted to one or a few numbers to move the ball. There will also be walls that the ball can bounce off. But if a particle travels through the wall, it can't explode while in the wall. There will also be levels where the background will show the night sky. The particle can explode here, and if the ball falls in, then it's sucked into space!

Can you reach the portal in as few moves as possible?