Clash Royale is a relatively new game, released by Supercell in March 2016 for a worldwide market. The game combines several types like MOBA, collectible card game and tower defence.
The goal is to reach the highest level, which is thirteen, go through nine arenas, including the training centre and win the trophies on that path. To win a battle, player needs to destroy more towers than his opponent does, or to destroy the King´s Tower of the opponent, which is a crucial symbol of the game. This can grant a player three crown victory. At the beginning, players are given a four cards from the eight-card deck, that player chose. These cards can be used as attack and defend option.
It is a free of charge game but there is a possibility to buy gems and gold using real money. With these gems and gold, player is able to buy new cards or certain chests that may have a special task for the game. It takes some time for the chest to open, depending on how rare the chest is. However, two chests unlock instantly, the Free and Crown chests. Every player receives free chests every four hours, and crown chest every 24 hours.