Music Man Online is a free-to-play, social music MMO. With five game modes, players can demonstrate their rhythm skills through multiple popular dances.

IMVU is a 3D social game where players can chat and create their own virtual worlds. Create a custom avatar and fit it with a wide range of clothes and accessories. Furnish your own room, and explore those designed by players around the world.

Animal Jam is a social game brought to you by National Geographic. It provides children a wonderful learning environment where they can learn about and adopt various wild animals.

Fantage is a 2D browser based virtual world designed for children. Players customize their own avatars, explore various areas, play minigames, and make friends. Fantage is primarily a social game and a safe virtual playground for parents to drop off their kids.

Second Life is a free-to-play casual simulation MMO (virtual world) developed by Linden Lab for PC, Mac, and Linux. Second Life does not have classes, any particular objectives, or any traditional MMORPG mechanics.

Gaia Online has become popular as a large forum and its innovative approach of giving players gold coins each time they post. Since then, it has evolved into a mix between a social network and a casual gaming site.