VRChat is an upcoming free-to-play massively multiplayer online virtual reality video game created by Graham Gaylor and Jesse Joudrey. It allows players to interact with others as 3D character models.
Definition #2 for "vrchat"
VRChat is a free-to-play multiplayer virtual reality social game in which players explore various virtual worlds using customized in-game avatars. In late 2017, the game was widely featured in livestreams on Twitch and gameplay videos on YouTube.