"The Magic Egg" is based on a 1960 comic story titled, "L'Oeuf et les Schtroumpfs" ("The Egg and the Smurfs" in English). It originally appeared as a detachable supplement in Spirou (a prominent Belgian comic magazine formerly called "Journal de Spirou"), but was serialized with modern character designs in 1966. Unlike the cartoon adaptation, the original comic story has noticeable differences:
- The magic egg was not created by Gargamel and it was not stolen and lost by Bigmouth the ogre (who did not appear in the comic story). Its origins are unexplained.
- Gargamel does not appear in the original comic story.
- Smurfette does not appear in the original comic story as it pre-dates her 1966 debut in "La Schtroumpfette" ("The Smurfette" in English).
- Papa Smurf wished himself as a young Smurf instead of a monkey as depicted in the cartoon version.
- The egg is not large and golden-colored, but normal-sized and white-colored.
- The egg did not disappear by Papa Smurf, but it hatched revealing a young chick that grows up to be a rooster to the shock of an unnamed Smurf who built an enclosure in the thought it will grow up to be a hen and lay magic eggs.