Clash Royale International Server is a popular mobile strategy game developed by Supercell. In this game, players collect and upgrade different cards featuring Clash of Clans characters to build their own deck and battle against other players in real-time. The goal is to destroy the opponent's towers and king's tower to win trophies and climb up the global leaderboards. With its fast-paced gameplay and competitive nature, Clash Royale has become a global phenomenon with a large community of players from around the world.