VRChat lets everyone use their own completely custom avatars. You build it in Unity (with ability to use custom 3d models, textures, arbitrary shaders, animatio

VRChat lets everyone use their own completely custom avatars. You build it in Unity (with ability to use custom 3d models, textures, arbitrary shaders, animations, toggles, OSC protocol support for controlling animations/toggles from external programs/hardware, etc). You upload your avatar to VRChat and then everyone can see you use it. (You don't have to tell everyone you want to see you as it to install your avatar manually from outside the game like how most game mods work.) You can optionally upload an avatar as public so that other people can use it too. People can also make their own worlds (environments) that anyone can visit (unless you mark it as private) that can include arbitrary assets, (sandboxed) level scripts, internet media players, etc. You can make a private instance of a world to visit with friends, or visit a public instance of a world to visit with anyone else who goes there too. Whenever I get on VRChat with my friends, often a few people show off recent work they've done on their own avatar or worlds. I've uploaded worlds, visited the public instance of the world, and then bumped into tons of random people checking out my world. The game is so good for directly showing off work you've done and talking to other people about the stuff they've made.