Randomness, Cookie Clicker Wiki

The game uses a pseudorandom number generator for deterministic randomness purposes, such as the result of casting spells in the Grimoire and the type of sugar lumps. Therefore, two games with the same seed would behave in the same way (getting the same Force the Hand of Fate outcomes for example). Every run of Cookie Clicker has a unique seed, stored in Game.seed. This seed is five lowercase letters. The seed can only be changed by ascending, hard resetting or manually editing it in the console

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Achievement, Cookie Clicker Wiki

File:Six color matrix - 20 % less random.gif - Wikimedia Commons

Garden, Cookie Clicker Wiki

Totally normal gameplay. : r/CookieClicker

Attack on Cookie, Cookie Clicker

Random number generation - Wikipedia

Achievement, Cookie Clicker Wiki

Cookie Recipes, Cookie Clicker Wiki