NumberFall - number adding challenge

Whether you are training number addition for school or just want to challenge your basic math skills and test your limits this is a fun way to do so!

Rules:

- Numbers are falling through the screen at an accelerating speed - you have to always find the sum of the 2 numbers located lowest on the screen to eliminate them

- There are 10 possible answers to choose from

- You loose if any of the numbers touches the bottom line

Modes:

- EASY, MEDIUM, HARD differ by initial speed of numbers

- you can choose the maximum value of the falling number - 9, 99 or 999