Which gaming platform first introduced a player-to-player marketplace with its own currency exchange rate that fluctuates based on real-world economic factors?

The intersection of gaming and retail has created fascinating economic ecosystems within virtual worlds. From in-game purchases to virtual storefronts, gaming platforms have pioneered innovative retail strategies that sometimes even influence real-world commerce. Test your knowledge about a groundbreaking retail innovation that transformed how players interact with virtual economies!

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Second Life with its Linden Dollar (L$)
Fortnite with V-Bucks
World of Warcraft with WoW Tokens
Roblox with Robux