The Immortality Egg is the eighth egg in Egg, Inc.
While trying to improve the effectiveness of the Medical Egg, a new chicken genotype was discovered that lays panacea-like eggs. These eggs were found to be ridiculously effective, being able to heal the sick, cure aging, and even revive the recently dead. With immortality achieved, world leaders met to rewrite the laws of the world. As death no was longer an issue, many like-minded people set out to colonize far-away star systems.
Immortality Eggs are blue eggs with white reflections on it. Inside is a double helix, most likely representing DNA.