There are four sets of Arithmetic troubles each and every is connected to a site visitors mild sign. If you tap right alternative for the requested issue, it will make its sign green and rest all signals will be pink. In each individual stage you have to management the site visitors for a limited time. Try to solve as lots of concerns as you can, while avoiding the website traffic congestion. If you tap the completely wrong choice, you will drop the stage. Recreation will be tougher step by step as you development the amounts.