Which gaming company revolutionized consumer VR with its 2016 headset that required no external sensors and introduced 'inside-out' tracking technology?

The gaming industry has been at the forefront of virtual reality technology adoption, transforming how players experience digital worlds. Major companies have made significant investments in VR hardware and software, but do you know which gaming company was truly revolutionary in bringing VR to mainstream consumers? Test your knowledge about the history of VR in gaming and see if you can identify the company that changed the virtual reality landscape.

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Oculus (with the Oculus Quest)
Sony (with PlayStation VR)
HTC (with the HTC Vive)
Microsoft (with Windows Mixed Reality headsets)