There are two versions
(This is what they will use in tamatown.com)https://famitama.com/pc/index_en.htmlEngilsh
https://famitama.com/pc/index_ja.htmlJapanese
V5 is real, because that when they made v4 they made v4.5 after 6 months of the release date of the v4 because every year they make new versions of Tamagotchi.
in the European site the updates before they let it shut down in the original one are not the same in the European Site there were no updates in european