VRChat is less a single game than a sprawling, community-made place to visit. Its worlds range from social hangouts and virtual hikes to car meets and live music events, while player-created avatars let people shape how they appear. Groups offer a way to reconnect with a community on a later visit, giving exploration a social thread beyond any one world.
There is plenty to do beyond meeting and talking. Players can also build worlds and games with the VRChat SDK, Unity and Udon, so the experience includes both trying community creations and making new ones. VR headsets are optional, though the game can use hardware features such as full-body and finger tracking.
Its multi-player, MMO, PvP and co-op categories also point to varied ways to share the experience. A count offers a snapshot of participation across that mix, not a measure of activity in any single world or activity.