Cloud9 is a competitive Hearthstone team from United States of America. Part of an American esports organization Cloud9. Sponsored by HTC and previously known as Cloud9 G2A, it fields teams in League of Legends, Call of Duty: Black Ops III, Counter-Strike: Global Offensive, Hearthstone: Heroes of Warcraft, Super Smash Bros. Melee, Halo 5: Guardians, Smite, and Heroes of the Storm.