Use arrow keys to navigate the shop. Click the cookie, and buy upgrades to improve cookie production! Sometimes a golden cookie will appear, giving you some cookies and a short boost. In the beginning, the Cookie Festival will increase your cookie production by 25%. Once you reach a certain number of cookies, you will be given the option to sacrifice 50% of your cookie production for a lot of cookies. When you reach a very high amount of cookies, the Cookiepocalypse will begin, taking 10B cookies and 50% of your production. Playing with the golden cookie on may be too easy. Press X to get rid of golden cookie. As you progress, the cookie will become more and more cracked.
At least decimals appear and disappear.