Actually, Neopets isn't really a knockoff. Most of the other virtual pets sites are based off Neopets.
They have about 144,929,120 members right now.
I used to play Neopets for awhile when I was younger, I hate it now.
Well, you need to get a Mohitamatchi (toddler with the Mohawk) to get into the Kuchi Family.
It's random what toddler you get; you might get Harutchi, Puchitchi, or Mizutamatchi instead.
E-Tamago is the 'Tama Town' for the Japanese Tamagotchis: EnTama and UraTama.
EnTama Town: https://e-tamago.com/pc/flash/tamago.html
UraTama Town: https://e-tamago.com/urapc/flash/uratama.html
Tamagotchis. Especially the Japanese ones and the old ones.
Also, Neopets are very boring. They just sit there, and the people on the site are very rude.