In Clash Royale, players are ranked by their experience level and trophy count. Players level up by gaining experience points through donating and/or upgrading cards and completing achievements. The highest possible level is level thirteen.
Trophies are won or lost through multiplayer battles - a player wins a battle by destroying more towers than the opponent (each destroyed tower being represented as a 'crown'), or by destroying the opponent's King's Tower, resulting in an automatic "three-crown" victory.
There are 11 playing arenas in total (excluding the tutorial arena, Training Camp): Goblin Stadium, Bone Pit, Barbarian Bowl, P.E.K.K.A's Playhouse, Spell Valley, Builder's Workshop, Royal Arena, Frozen Peak, Jungle Arena, Hog Mountain, and Legendary Arena, with each arena corresponding to a certain trophy count range.
This article uses material from the Wikipedia article Clash Royale, https://en.wikipedia.org/wiki/Clash_Royale which is released under the Creative Commons Attribution-Share-Alike License 3.0, https://creativecommons.org/licenses/by-sa/3.0/.