Clash Royale is a Supercell game. For battle, there are 94 cards and you need to get them. The rarities are common, rare, epic and legendary. You start at training camp, then go up from arena 1 to arena 13. Starting cards are: Archers, arrows, bomber, knight, mini P.E.K.K.A, musketeer, fireball, giant, prince, witch, skeleton army and baby dragon.
Arena 1 cards are: Goblins, spear goblins, goblin hut, Valkyrie, lightning and goblin barrel.
Arena 2 cards are: Skeletons, minions, bomb tower, tombstone, giant skeleton and balloon.
Arena 3 cards are: Barbarians, cannon, rocket, barbarian hut, X-bow and rage.
Arena 4 cards are: Tesla, minion horde, hog rider, inferno tower, freeze, P.E.K.K.A, lava hound and inferno dragon.
Arena 5 cards are: Zap, fire spirits, furnace, wizard, mirror, poison, ice wizard and graveyard.
Arena 6 cards are: Mortar, skeleton barrel, elixir collector, battle ram, tornado, Golem, the log, sparky and miner.