Worlds Hardest Challenge Fill Fridge is a very challenging food placement game that can be played online for free by boys. It is important to fill the refrigerator with a wide variety of items from different categories and to utilize all of the available space in the refrigerator. You will not be able to proceed to the next stage until everything has been stored in the refrigerator. Observing the chaotic items become orderly while they are in your possession will provide you with a satisfying feeling of achievement. Have a good time with it!