Forbidden Valley was an Alpha world that had ninjas. Their main Maelstrom enemy was not the Maelstrom Ninja, but the Maelstrom Pirate.
Starting out as a lush world with plants and temples, it changed into a dark, mountainous world with barely any flora. The Dojo was then moved to the top of the Great Tree, where it still sits. The enemies also changed, as now there are Maelstrom Ronin and Maelstrom Horsemen. A dragon battle instance was also added, and for a while in Alpha, the dragons had the same texture as Burno, but were not him. Their textures were fixed, making them more Maelstrom-like.
- Originally, a Ninja stlye Training Mech was planned for the world, resembling the Pirate version.