Cookie Clicker is an idle simulation game where players generate cookies by clicking. The core loop involves spending accumulated cookies to purchase upgrades and buildings that automate cookie production, such as Grandmas, Farms, and Factories. The game expands significantly with over 600 available upgrades and more than 500 achievements to unlock.
Additional content includes mini-games, the ability to pet a dragon, and permanent upgrades earned through a heavenly ascension system. Cloud saving prevents accidental data loss, and the game features music composed by C418. Community-made modifications are supported via the Steam Workshop.