Users can start playing the game for free, as all new players receive the starter deck, consisting of 40 individual cards. The battle arena has two lanes and is structured like a MOBA. The player’s mission is to defend their tower and attack the enemy's towers. A game of Mytheria contains a series of rounds and five phases and lasts until victory is achieved. The game is skill-based and is determined by a combination of decision-making during the game as well as by tactically building the deck before the game.