But what could possibly replace the massive income generated from loot boxes? The answer seemed impossible until 2013 when Dota 2 introduced something called the Compendium, which laid the groundwork for what would eventually become the new norm in the gaming industry. The Compendium was an in-game digital book that held challenges players could complete to unlock various items including emotes, character skins, and voice lines. While this gave players exactly what they wanted, it’s important to note that these all these were still paid features. Despite the pay wall, Dota 2’s Compendium was a massive success and generated millions of dollars. While the exact amount of money made is unknown, Valve has always pledged 25% of their Compendium earnings to their Dota 2 prize pools, which was up to a massive 40 million dollars in 2021.
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