Launched in 2013 by programmer Julien "Orteil" Thiennot, Cookie Clicker initially seemed like a silly browser game, but it quickly became a global phenomenon.

So, what exactly is so interesting about Cookie Clicker that millions of gamers are willing to spend hours and nights baking virtual cookies?

1. The Dopamine Hack from Giant Numbers

The most interesting aspect of Cookie Clicker directly taps into the human desire for rewards.

It starts humbly: You begin by manually clicking on a giant cookie. 1 click = 1 cookie.

The Snowball Effect: Very quickly, you use the cookies you've earned to hire Grandmas to bake cookies for you, buy a Cookie Farm, and even build a Factory.

The Explosion: Your production rate will increase from a few dozen to millions, billions, and then trillions of cookies per second. Witnessing these asset numbers dance and grow exponentially creates a massive amount of dopamine, providing a feeling of ultimate satisfaction and accomplishment.