IMVU (short for Instant Messaging Virtual Universe) is an extraordinary virtual social application based on 3D characters and scenes with years of development. Compared with traditional text or voice IM chat, it creatively adds 3D characters. This can not only increase the atmosphere of chatting with simulate the real scenes, but also simulate the actions of characters, thus greatly enhancing the interactivity and fun of chatting. Players can meet other people unexpectedly while exploring a large number of exotic 3D virtual scenes, realizing global friendship.

VRChat is a very cool, free massively multiplayer online virtual reality social platform application (not just a game) developed by Graham Gaylor and Jesse Joudrey using Unity in 2014. If you think of VRChat as a pure game, then its gameplay is somewhat similar to that of Second Life and Habbo. In this VR world, every player can create his/her favorite world, room and character, incarnate into any figure he/she likes, and freely communicate and interact with strangers all over the world!