Number Stack is a brain game, that improves your cognitive and mathematical abilities by playing against other players around the world.
The rules are simple: 1. At least two numbers will be assigned key words (Hello, World). For all numbers that are divisible by those numbers or that contain those numbers the keyword needs to be said. 2. Increment by turns.
Example: The number 4 gets assigned the key word 'Hello' The number 7 gets assigned the keyword 'World'
Instead of: 4, 8, 12, 14, ... you need to say 'Hello'. Instead of: 7, 14, 17, 21, 27,... you need to say 'World'.
- Collect points to gain ranks - Collect gems and trade them to perks in order to get additional advantages - Complete daily challenges to get a reward. However, if you fail the daily challenge you will be punished!
Have fun!
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