Neopets - Neopets is an Amazing, Virtual World, Massively Multiplayer Online, Role-playing and Fantasy-based video game developed and published by Viacom.
Horse Isle - Horse Isle is usually a horse orientated web browser based MMO which will have you exploring the world on horse-back, engaged in the community and all sorts of manner of horse orientated activities.
Toontown Rewritten - Toontown Rewritten is a Free to Play, Browser-based, MMORPG, and Virtual-World video game developed and published by Disney.
Club Penguin - Welcome to Club Penguin, a virtual world for kids guided by an unwavering commitment to safety and creativity
Miramagia - Miramagia is an Awesome, Massively Multiplayer Online, Role-playing, Virtual World and browser-based video game developed and published by Travian Games.
Webkinz - Webkinz is an Animal-based, Virtual Children’s World, Fantasy and Browser-based Simulation developed by Ganz.