Which game is widely credited with pioneering the microtransaction model for Western audiences, fundamentally changing gaming retail strategies?

Microtransactions have transformed how games are monetized and sold in the digital marketplace. What began as simple add-ons has evolved into a multi-billion dollar strategy that affects game design, marketing, and player experience. This poll tests your knowledge about the origins of this controversial but highly effective retail strategy in the gaming industry.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

The Elder Scrolls IV: Oblivion with its controversial 'Horse Armor DLC' in 2006
World of Warcraft with its 'Celestial Steed' mount in 2010
Team Fortress 2 when it went free-to-play with cosmetic purchases in 2011
League of Legends with its champion and skin purchases at launch in 2009