Oculus first burst onto the scene on 1 August 2012 when it started a Kickstarter funding round for its Oculus Rift virtual reality headset and it could not have imagined what would happen in the following years.

It raised a mind-boggling $2.437 million (more than £1.5 million) after seeking just $250,000 and that was the beginning of a roller coaster ride that included a $2 billion acquisition of the company by Facebook.

Very soon we're about to see the actual consumer product of all the endeavour and hard work put in by the Oculus team, adapting and refining its headset to suit the needs of today's discerning gamer and VR enthusiast, so that's why we've decided to take a brief look through the genesis of the device itself.

It has sported many guises, with different development builds and designs along the way, so it's interesting to see exactly how much it has changed in the last three years. And it will be more interesting still to see how that applies to the full consumer model to be launched later today in San Francisco.

Have a flick through our gallery above to see the differences for yourself and we've given brief comment with each to help you remember each iteration.

READ: Oculus Rift consumer headset launch to be livestreamed: Here's how to watch it