Pokemon ruby is a game for the gba where you have creatures that can battle,complete in the beauty contest,eat snacks,be trained and can be bred. You complete against trainers to earn money. You can use this money to buy healing items or snacks for your creatures. You complete against gym leaders to see how your training is going on. You complete to get gym badges and then eventually complete against the elite four to be crowned the pokemon champion. The main icon of this game is groudon.