Walkthrough:Kingdom Hearts Re:coded/Traverse Town
After completing Destiny Islands, you are introduced to Traverse Town. During the initial cutscene, Data-Sora and Mickey celebrate their successful debug of Destiny Islands before deciding to scout the new area for bugs. Sora then meets Cid, who expresses his worry about his missing triplets, Huey, Dewey and Louie. Sora agrees to look for them and the two part ways, giving you back control.
You'll find yourself in the First District, the centre of the town where most of the residents live. First of all, speak to all the NPCs, especially the old woman in the south-west corner, who will give you a Potion. Now it's time to clear the room of its treasure. Firstly, ascend the stairs beside Cid to get to the north-right corner of the map. Look at the wall immediately to your right to find a climbable ladder, leading to a Metal Blox. Jump from it to bounce on the Bounce Blox to reach the roof of the centre building. From there, face towards the southern section of the area and you'll notice another Bounce Blox, which lets you bounce to the Rare Prize Blox further south. Break it to obtain a Thunder.