Start by finding numbers that have a given sum and are next to each other in the array.
Works as a fun puzzle game for people of all ages. The easiest levels are suitable for young children just starting to learn addition, while the most difficult levels are challenging even to people with amazing mental calculation skills.
Provides mathematical training, including addition, subtraction, multiplication, multiples as an intermediate step between addition and multiplication, negative numbers, and fractions. Instead of standard elementary textbook problems (what is 3+5), the game is based on inverse problems (which numbers sum to 8), mixed with some non-mathematical elements. These problems require a slightly different way of thinking, and this also makes the game more entertaining.
After the completion of every level, the game gives a score based on speed, mistakes, and other factors. It also keeps track of total progress through all levels and game modes. There is also a hint button for getting through difficulties.