MMOs similar to VRChat

The closest peers are ChilloutVR, Second Life and Resonite — direct competitors running the same playbook: upload your own avatar, build your own world, no story and no fixed goal. ChilloutVR runs on the same Unity backbone and offers a nearly identical creator toolset, just with a much smaller crowd behind it. Resonite (the successor to the now-shuttered NeosVR) goes further under the hood — its hybrid FrooxEngine allows more flexible live scripting and cross-session item persistence — but it's still well behind VRChat on community size and the sheer number of finished worlds.

A step further in spirit but closer in scale is Rec Room: the same "the community builds the rooms" premise, leaning harder into minigames with a far gentler, family-friendly on-ramp than VRChat's adult-leaning ecosystem. Meta Horizon Worlds rounds out the list as the corporate take on the same idea — avatars plus user-made worlds, minus the freewheeling creator culture, replaced by curation and stricter moderation.