How smart you are is determined by how quickly and accurately you can manipulate numbers in your head.
No complicated calculations at all!
Compete with geniuses from around the world in a simple puzzle game!
Updated on
Aug 30, 2025
Puzzle
Data safety
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Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.