When having fun with such Tamagotchi, gamer must continue feeding, cleaning and also various other tasks. Mistakenly, the Tamagotchi is just the start of the electronic pets toys on the planet. For instance, if they are not fed well, they would not grow very well and might even die. After the electronic family pets, there are simulation family pets such as Idog and Ifish in the toys market, the size of them is always palm size and also they can share their emotions according to the different commands, which is based upon a collection of sensors. However, with the high cost, about 80 US Dollars, as well as rigid exterior design, they were gradually replaced by one sort of high simulation electronic pet cat, which have the look such as the genuine feline.