DropSum is an addictive online math puzzle game created by Nick Harper that takes logic and quick thinking to survive.
The object of DropSum is to take the random numbers you are given and make rows or columns that add up to the number 9. The game board consists of seven columns and seven rows. Place each number in the column of your choice by clicking on it.
Make as many combinations of nine as possible. Once you make a combination that adds up to 9, the numbers that made that combination of 9 [Read More...]