Pokemon emerald is a game for the gba where you have creatures that can battle other trainers,can be trained,can complete in the pokemon beauty contest,can eat snacks,can be bred. You battle other trainers to earn money. You can use this money to buy healing items. You complete against gym leaders to see how your training is working out for you. You earn gym badges. You complete against the elite four to be crowned the pokemon champion. The main icon of this game is rayquaza.