The length of hatching seems to depend on how much attention it gets before hatching from the child. Usual hatch time is about 30 to 45 minutes. This is based on reviews and comments from purchasers. Kids can touch, rub, and play with the egg before the creature hatches, which provides interaction between child and toy. The more attention to the egg, the quicker it will hatch. The eyes as they glow can be seen from the outside of the egg. When they are rainbow-colored, the Hatchimal will open the top of the egg itself and “hatch.” Kids must help get the critter out of the egg once the top is open.