Standard pyramid:
Push the [Start] button. Add up two numbers in a row next to each other. Enter this value in the box above these two numbers. Fill in all the boxes and make sure you've calculated it right. Push the {Check] button to validate your results. Each level will be more difficult. This game is a fun way to practice mental arithmetic.


Random pyramid:
In the standard pyramid, only the lower five fields are given. In the random pyramid 5 random fields are given. This means you have to use addition and subtraction.


Personal records:
Here you see the fastest times per level on your phone / tablet


World records:
Here you see the fastest times per level ever made by anyone.


Have fun!!!