A fun game you can even design yourself that teaches the basic principles of physics and chemistry while providing for a neat demonstration of chain reaction and cause and effect. Action reaction requires the player to start a chain reaction and awards points for the longest reaction achieved. The player left clicks on one of the many little circles that have a quarter of them filled in, whenever the little circles face each other it cause them to rotate ninety degrees and affect more circles. This reaction can spread across the whole board and reach the thousands in count of how many circles effected. Action Reaction is one of our many Puzzle Games that we publish on TheGamerStop.com. This game is also tagged as a Chain Reaction game. Click the play button to start having fun. To play even more free games, view our popular and new games page. If you want to play more games like this, then you can simply check out the games inside the game tags that are the most relevant to your interests or the Puzzle Games category or the games like this game page at the end of the game tags.