If you open Pizzatron 3000 you will be able to see a switch in the left bottom corner. Click it. (See Below)
After you click it once, click Play. Once you start you will be in Candy Mode. (See Below) TW
To get to play the secret levels in Bean Counters, you have to click on the string coming out corner of the top bag. (Look Below)
Once you click the Corner of the bag, jelly beans will fall out of the bag. Click on them. (Look Below)
Once you click on the Jelly Beans you can choose what level you want. Then they will tell you the instructions. (Look Below) Feel free to comment. TW