Which hyped virtual world platform shut down in 2020 after spending approximately $45 million in development but failing to attract users beyond its initial beta phase?

The gaming industry has seen numerous ambitious virtual world projects launch with massive hype, only to crash and burn. Some of these failures have become legendary cautionary tales in product development. Test your knowledge about one of the most notorious virtual world failures that promised to revolutionize gaming but instead became a costly lesson in product management.

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Sansar (by Linden Lab, creators of Second Life)
PlayStation Home (by Sony Interactive Entertainment)
Decentraland (by Decentraland Foundation)
Worlds Adrift (by Bossa Studios)