Which gaming company first introduced a 'virtual economy' with real-money trading capabilities, revolutionizing the player-game relationship and creating a new customer experience paradigm?

The gaming industry has transformed how players interact with virtual worlds and how companies design customer experiences. From basic arcade interfaces to immersive virtual reality environments, gaming companies have pioneered customer experience innovations that many other industries now emulate. Test your knowledge about a pivotal moment in gaming customer experience history that changed how players engage with virtual worlds.

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Sony Online Entertainment with EverQuest (1999)
Linden Lab with Second Life (2003)
Blizzard Entertainment with World of Warcraft (2004)
Valve Corporation with Steam (2003)