Tamagotchi Original Yellow
The original Tamagotchi was a virtual pet created in Japan by Akihiro Yokoi of WiZ Co. Ltd., and Aki Maita of Bandai Co. Ltd. It was released in Japan in 1996, then in America and Europe in 1997. It had one baby character, one toddler character, two teen characters, and seven adult characters, for a total of 11 characters. One of the adult characters was a "secret"character, which could eventually appear from one of the other adult characters if given a certain level of care. The screen of the device featured a 16 x 32 squared dot matrix where the character was displayed.