At the start of each battle, you will be dealt a hand of 6 cards. You will not be drawing more cards, so you must formulate your strategy on the basis of these 6 cards and these 6 cards alone. Players take turns playing 1 card at a time, until either all cards have been played, or one player decides to surrender and drop out.
The order you play your cards is critical, and so is how you play them. All cards can either be played face up or face down. Face up cards grant you special powers but must be played in a matching theater (for example, air cards must be played in the air theater.) Face down cards are wild and can be played to any theater, but do not grant any special powers.
At the end of the battle, the winning player earn points based upon how many cards are left in their hand. The less cards left in your hand, the more points you will earn. This means the stakes get higher the longer a battle continues. Thus, it may sometimes be in your best interest to surrender — to deny your opponent additional points.