Tamagotchi

Tamagotchi is a super-fun virtual pet game in the form of a handheld egg-shaped keychain toy that has three buttons (A, B, and C), which you tap to select and perform activities such as feeding your Tamagotchi, playing games, cleaning up after the Tamagotchi (which includes picking up Hershey's Kiss-like poops), discipling, and checking your pet's age, weight, happiness, hunger, and other stats.