The 10 Most Watched Ads on YouTube in December

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It's a Supercell world. Other brands on Adweek and Google's monthly YouTube Ads Leaderboard just live in it. Or so it would appear from December's ranking of the most watched ads on the video site.

The mobile gaming company placed no fewer than five spots on the list, including the top two. Four of those were for Clash of Clans, and a fifth was for Boom Beach. And the overall No. 1 spot for the month, with more than 30 million views, was a 360-degree video for Clash of Clans—the first time any VR-style spot has made the Leaderboard.

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