Which gaming company was first to successfully launch a commercial virtual reality headset that achieved significant market adoption?

The gaming industry has seen remarkable innovations in virtual reality technology over the past decade. From early prototypes to mainstream consumer products, the race to dominate the VR gaming market has been intense. This trivia question tests your knowledge of which major gaming company was first to successfully launch a commercial VR headset that changed the landscape of immersive gaming experiences.

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Oculus (with the Rift)
Sony (with PlayStation VR)
Valve (with the Index)
HTC (with the Vive)