Yo’ster Isle in Super Mario RPG has a total of one entire hidden chest for you to uncover. And while it’s very easy to find, I do not blame you wanting help. After all, some of the hidden chests in this game can be real doozies to uncover.
To find the Yo’ster Isle hidden chest, go to the area you first emerged from when you exited the Pipe Vault. Jump over the save point, and then jump straight up. You’ll bump your head on the hidden chest there, which will reveal a Frog Coin. This is, indeed, the only hidden chest you’ll find here. Easy!
While you’re here, make sure to chat with Yoshi and race Boshi to get some Yoshi Cookies. The rhythm minigame can be tough on a TV with input lag, so if you’re having trouble, consider giving it a go in handheld mode. This doesn’t have anything to do with the hidden chest. I just wanted to talk about something to make this article longer than a couple sentences.
Once you’re done in Yo’ster Isle, make your way back to the world map and continue your journey into Moleville. Best of luck!
Check out where to find the other hidden treasure chests in Super Mario RPG here.