cookie clicker is an addictive incremental game where players click on a big cookie to earn cookies. These cookies can be spent to buy buildings like cursors, grandmas, and factories that produce more cookies automatically. As the game progresses, players unlock upgrades and achievements to increase their cookie production. The game features a prestige system, allowing players to reset their progress in exchange for permanent bonuses. Cookie Clicker is easy to play but hard to stop, making it one of the most popular idle games online.