Foil Box is the third box in Cut the Rope. It was released on October 4, 2010 with the original game. It offers some new gameplay features as movable rope hooks and electric sparks. == Level 3-1 introduces movable hooks. Apart from moving the candy, they may be used with some effort to accelerate the candy and throw it in the air== Level 3-3 shows how rope hooks interact with automatic ropes. More, if a candy is attached to two rope hooks at the same time, the rope between them can be stretched.

Level 3-14 is the first time we see electric sparks. They are another obstacle, similar to spikes. However, sparks turn off from time to time, letting the candy through. They don't bring much trouble unless the player faces multiple sparks, as in level 3-23.

Level 3-3 and level 3-20 have Om Nom's Drawings.