Σ Spiral Sum

この楽しさと中毒性のゲームを通して、あなたの数学の能力に挑戦！

Challenge your math skills through this fun and addictive game. Sum the numbers as they fill the board and clear as many tiles as quickly as you can. Don't let the board fill up! See how many points you can rack up.

Challenge yourself and your friends in the 2 player mode!

HOW TO PLAY:

Sum up a line of numbers by clicking on a colored box on the game board. Then choose the correct answer from the options shown at the bottom of the screen to clear that line. The goal of the game is to clear as many boxes as possible before the board gets full. One point is awarded for each box cleared.