Play Chain Reaction, a thrilling physical strategy game that is completely free! Your task is to trigger a chain of explosions by catching colorful balls on the screen with a circle. The balls inside the circle will collide when they hit each other, creating a smashing effect. Once the flying orbits turn into big circles and stop moving, it's crucial to ensure that the remaining balls on the screen collide with them. Your goal is to create the longest chain reaction possible. As you progress through the levels, the number of moving orbits will increase. To unlock a new level, you must cause a specific number of balls to react. Enjoy playing this online game for free! Controls: Use your mouse to play.