Which gaming company first introduced the concept of 'Horse Armor DLC' that became notorious for launching the modern era of microtransactions in full-priced games?

The gaming industry has transformed how products are sold within virtual worlds. What started as simple expansion packs has evolved into sophisticated in-game economies, virtual goods, and microtransactions worth billions. This poll tests your knowledge about a pivotal moment in gaming retail that changed how games monetize player engagement. Do you know your gaming product history?

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

Bethesda (for The Elder Scrolls IV: Oblivion)
Electronic Arts (for The Sims)
Activision (for Call of Duty 4: Modern Warfare)
Valve (for Team Fortress 2)