NeosVR
NeosVR is a free-to-play massively multiplayer online virtual reality application created by Solirax. It allows users to interact with one another as avatars and features development tools for players to create in-game elements such as games, maps, ect. NeosVR was released for free on Microsoft Windows via Steam on May 4, 2018, and currently supports several VR headsets. Gameplay. The gameplay of NeosVR bears similarities to that of VRChat and AltspaceVR. Players interact with each other through virtual 2D and 3D avatars capable of lip sync, eye tracking, blinking, and a complete range of motion. While  the game is titled "NeosVR", one does not need VR equipment to play the game and may play in a desktop configuration. In this form, there are certain inabilities such as to freely move an avatar's limbs and inability to use some two-handed VR items. Users may import and create avatars from other games using NeosVR's built-in "avatar creator". In addition to avatars, users can write computer programs using Logix, a node-based programming system implemented entirety within NeosVR. Logix may be used to drive functionality for avatars, worlds and other inventions. NeosVR's selection of  worlds includes minigames, social lounges, and worlds created by the user base. A single user may have several multiplayer worlds simultaneously loaded at once, utilizing NeosVR's FrooxEngine to use multiple worlds at once. Users can customize their own worlds entirely from within NeosVR without the use of external SDKs, though it is possible to upload custom content such as code and in-game items for use. Hardware and software support. NeosVR supports many VR headsets such as Oculus Rift, Oculus Rift S, Oculus Quest with Oculus Link, Oculus Go, Pimax headsets, HTC Vive, Valve Index, and the Windows Mixed  Reality headsets. Controllers which support finger presence such as the Valve Index allow users to make hand and finger gestures, which can then be linked to activate certain facial expressions, animations, or custom events. In addition to numerous headsets, NeosVR supports a wide variety of VR accessories such as the Leap Motion finger-tracking module and the HTC Vive Lip tracker, enabling a user to visibly broadcast lower facial expressions and speech. The HTC Vive Pro Eye is also supported, enabling the use of eye presence in select avatars. Additionally, NeosVR allows for hip and feet tracking, commonly referred to  as "full-body" tracking. To accomplish this a user will wear a HTC Virtual Reality System Tracker, AKA a "Vive Tracker Puck" to relay the position of one's body. Movement is then calculated through inverse kinematics, with up to 8 additional trackers to replicate one's physical movement in real-time. Community. NeosVR's popularity is credited to its use by YouTubers and Twitch streamers. NeosVR has also been used by the University of Virginia and the Oxford Artificial Intelligence Society to host meetings and conduct lectures.