IMVU vs Neopets
IMVU
IMVU is a social virtual world game where players can create fully-customized avatars and interact with other players from all over the world. Enjoy hanging out with old friends or join a party to meet new ones in the many and varied virtual worlds created by the game's massive community. You can even create a virtual world of your own if you want to! IMVU is also a haven for role-players regardless of whether you'd like to play as a wizard or a witch, a vampire or a swashbuckling pirate, and if you're looking to just kick back and relax, IMVU has plenty of fun mini-games such as its fashion-themed match-3 game, Walk Off, for you to play. So, what are you waiting for? Your next adventure awaits in IMVU!Neopets
Neopets is rather old yet entertaining simulation/virtual world game that lets you adopt and take care of magical and unique pets. This means that you'll be expected to build them a home, buy them food, clothes and other cool stuff. Set in a cartoonish and immense world, you can even set off on exciting adventures with your pet. Best part is that thepets in this game can grow alongside you and they have different looks for different stages of growth, much like the Pokemon in a Pokemon game. There are plenty of fun mini-games to keep you engaged for hours on end as well.
Although the game is a bit on the old side (being released in 1997 and all), the game still holds its charm for players who want a game that's a combination of a usual pet simulation/collection game with a virtual world game. It's free to play and you can play it directly from your browser!