<P> Clash Royale is a freemium mobile tower rush video game developed and published by Supercell . The game combines elements from collectible card games , tower defense , and multiplayer online battle arena . The game was released globally on March 2 , 2016 . Clash Royale reached $1 billion in revenue in less than a year on the market . </P>
when was clash royale released in the us
March 2 , 2016