Wario Land 3: Part 12: The Big Bridge (Gray Chest)

This level is so far the easiest level I've played in this game regarding looking for its Gray Key & Chest. First off, for the Gray Key, just as you start the level, turn left. You'll find it against an upper wall in just a couple of seconds. The Gray Chest is right on the opposite side of the bridge, itself. The only trouble here are the fish that leap out of the water. Bump into them, and they will force Wario into a roll that sends him back to the left. Other than that, this is a total cakewalk. The Big Bridge's Gray Chest Treasure is Magic Seeds! With these seeds, new platforms are grown from the earth, and will appear in The Vast Plain, The Pool of Rain, and The Grasslands. Investigate those, next!