Nim is an ancient mathematical strategy game that’s easy to learn but surprisingly deep. On each turn, you remove objects from a single pile, and whoever takes the last object wins. Beneath this simple setup lies elegant mathematics: a perfect winning strategy based on the binary nim-sum, discovered by Charles Bouton in 1901.

This version of Nim lets you play against an optimal AI or challenge a friend in two-player mode. You can choose from preset pile configurations, enable hints to learn the strategy, and enjoy a clean, responsive interface. Whether you love math, strategy games, or quick brain challenges, Nim delivers engaging fun in a compact and clever package.

Explore the mind-blowing application of the Exponential Growth. The classic paper-folding thought experiment dramatically illustrates exponential growth. Starting with a standard paper (0.1mm thick), each fold doubles its thickness. While physically limited, mathematically, this simple process can achieve astounding heights. Can you think of how many folds it would need to make the paper stack exceed the 384,400 km distance to the Moon?