Mystery of the Castle?

Mystery of the Castle? is the second secret level in Yoshi's Island: Super Mario Advance 3. The level starts out with Yoshi going right-to-left over a few long pits of spikes, while avoiding several Fangs. After that the Player will find a Egg Block and a Warp Pipe, after going through the Warp Pipe the Player will find a hidden Winged Cloud, and a maze of bridges over lava. Eventually the Player will find a Middle Ring.

Eventually through the maze, the Player will find a Warp Pipe going upwards, after going through the Warp Pipe there will be two ways to go, a door and another Warp Pipe. The door is out of reach so the Player needs to bounce on a Zeus Guy, after going through there they will be able to throw an Egg to break a rock on the ceiling and a Arrow Lift will fall down, and they can bounce up where there will be hidden coins. After that the Player will go back down, and through the Warp Pipe.

Through it there will be another Middle Ring. After crossing some spikes the Player will continue upwards, riding Flatbed Ferries, the Player will then wind up in another maze of bridges. Through that the Player will find some rocks they need to throw eggs at to break, after breaking them the Player can go through a Warp Pipe. After that the Player will wind up at the end of the level.

However the Player could have gotten a key, somewhere else through the maze, and ridden a Arrow Lift to get up to a locked door. After going through that locked door, the Player will find a Middle Ring. The Player will then need to cross a long gap of Thorns. After that the Player will go down a long shaft, at the bottom they will need to cross a pit of Spikes After crossing it, there will be a few ways to go, one way is a door that takes the player back to the maze area. Instead the Player should ride an Arrow Lift upwards, and across a pit of Spikes, then the player will get to an area where they can Ground Pound a breakable rock, an get to a door.

After going through the door, there will be a Red ! Switch, the Player can hit it to make Red Blocks appear so they can cross a pit of lava. After crossing the pit they will get to a door, that takes them back to the shaft they went down earlier. If the player keeps going this way, they will be stuck in an endless circle, so the only reason to go around that way, is to get extra points and items.