One of those eggs is the fossil egg. It was released on October 10, 2020, replacing the Aussie Egg in the Gumball Machine at the Roblox Adopt Me Nursery. The name gives away what kind of pets are ...

What kind of creatures, animals, or pets are coming with the Mythic Egg in Roblox Adopt Me are also still a mystery. The Mythic Egg title should give a couple of clues, however.