Facebook is buying a Californian virtual reality company for about $US2 billion. Oculus Rift makes a virtual reality headset that is yet to hit the market.
Facebook boss Mark Zuckerberg said Oculus' technology could change the way people work, play and communicate.
Facebook spent $US19 billion buying the What's App messenging service two weeks ago.
Shares in Facebook slumped 5 percent after the Oculus purchase.