Tamagotchi
Tamagotchi is a keychain-sized virtual pet simulation game created in Japan by Akihiro Yokoi of WiZ and Aki Maita of Bandai. Upon activating the toy, an egg appears on the screen. After setting the clock on the device, the egg will wiggle for several minutes, and then hatch into a small pet. Pets have a Hunger meter, Happy meter, Bracelet meter, and Discipline meter to determine how healthy and well behaved the pet is. There is also an age and weight check function for the current age and weight of the pet. The player can care for the pet as much or as little as they choose. Thus, the outcome depends on the player’s actions. The pet can become sick for a number of reasons such as overfeeding of snacks or failing to clean up droppings. If sickness is left unchecked, the pet can die.