Earthbound: Capsule Quest

The game is short, 3 towns, 5 different areas to catch monsters. The final boss is a Lv. 50 pink Starman. You go around the island interacting with people and unlocking little challenges. Try catch the monsters and see if you can beat your rival and a strange scientists perfect battle simulation robot! There should be about 2 to 4 hours of gameplay. You could possibly beat it in one or two sittings.