Clash Royale is a free-to-play real-time strategy 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. In three years, Clash Royale made $2.5 billion in revenue according to market intelligence company Sensor Tower. It is the first spinoff of Clash of Clans.