Are There Any Fun Games That Are Like Poptropica I Wanted To Know, Is There Any Games Like Poptropica, Webkinz, Or Neopets?

I wanted to know, Is there any games like Poptropica, Webkinz, Or Neopets? - are there any fun games that are like poptropica

Well, my friends and I want to play, but we can not identify those that are free and they are fun. Please can someone help?