Half-Life maker Valve has unveiled Steam Link, the Source 2 engine, and more, at the Game Developers Conference today.

Steam Link will enable game streaming from Steam Machines, PC, Mac, and Linux PC within a network. It will support 1080p gaming at 60Hz . Steam Link will be available this November for $49.99, and users can add $49.99 on top for a Steam Controller. Valve will announce worldwide pricing closer to launch date.

Steam Link appeared briefly on Steam before the page was taken down.

Valve also detailed two new technologies which will be part of its virtual reality headset, Vive; a "room scale tracking system" called Lighthouse, and a VR input system. Simply put, Lighthouse will help Valve's VR achieve higher resolution and higher speed tracking for a lower hardware cost. It will be available for free to hardware manufacturers who are interested. Vive will ship this year in April for developers, and November for consumers.

In addition, Valve revealed the Source 2 engine, a successor to the Source engine which powered games such as Counter-Strike and Half Life 2. Source 2 has been made with a focus on "increasing creator productivity." Source 2 will be free to content developers, allowing "gamers themselves to participate in the creation and development of their favorite games." It will be compatible with Vulkan, the name of the graphics API Valve teased earlier this month.

GameSpot will be getting hands-on with SteamVR at GDC this week, so stay tuned for more coverage as it rolls out on the hub.