Cookie Clicker

Cookie Clicker is a simple but surprisingly addictive idle (or "incremental") game.
You start with one giant cookie. The game begins by clicking it to earn cookies. Then you spend those cookies on things that make even more cookies automatically, such as:
👵 Grandmas
🌾 Farms
🏭 Factories
🏦 Banks
🚀 Spaceships
🌌 Weird, magical cookie-producing buildings
As you play, you unlock:
Hundreds of upgrades that make your production faster.
Golden Cookies that randomly appear and give temporary bonuses.
Achievements for reaching milestones.
Ascension, a prestige system where you restart but become much more powerful.