Tolbi Springs from the first Golden Sun.
The Lucky Medal fountain is a minigame in which the player must stand in front of the fountain and look the opposite direction of it. The player has a choice of either throwing a coin or a Lucky Medal behind their back and attempt to land it inside the fountain. Within the fountain are two yellow circular targets within one another. The prize you win from the fountain depend on where the coin or medal lands; for example, if it lands in the smallest center target, you win a grand prize. However, if the coin or medal lands in the outside target, or in the blue area between the targets, you'll win a prize of less worth. If you land outside the targets, there's not a likely chance you'll receive a prize of much worth. The turtles and crabs are objects that randomly move around the fountain, making it difficult to land a prize of your liking. If any of them are hit, not only will their colors change and increase their difficulty rate, your coin or medal will bump off at a great degree and greatly alter the outcome of the coin or medal's final landing.
Coins or Lucky Medals?
You can throw two objects, a coin or a lucky medal. Throwing a coin will earn you money, if you at least land it within a target, that is. If the coin lands outside of a target, you win nothing. The maximum number of coins you can win is 20 coins.
Throwing a lucky medal will win you a wide variety of prizes, depending on your landing. You can win valuable items and equipment not found anywhere else in the game. In The Lost Age, you can win the summon tablet, Eclipse, by scoring a perfect landing.
Tolbi and Lemuria Springs
Chronologically, the first lucky medal fountain built was in Lemuria in Golden Sun: The Lost Age. When Babi and Lunpa discovered Lemuria over a hundred years ago and visited the civilization, Babi loved the game so much that when he returned home to Tolbi with his Lemurian draught, he built a replica of the Lemuria Spring in his hometown, which appeared in the first Golden Sun.