The Pool of Rain

The Pool of Rain is the third level on the western side of the music box world in Wario Land 3. Wario unlocks both this level and A Town in Chaos after finding the Jar in Out of the Woods's Red Chest, which causes a rain cloud to be released and fill the empty pool.

This level takes place in a rainforest, where trees are found over a pond. In the main area of this level, there are posts above a pond with trees in the background. The upper portion of this level contains treetops, while the bottom portion of this level contains a lot of currents behind a door. This level contains a boss battle with Wolfenboss, located in the latter. Moreover, there is a cave behind another underwater door behind the glass container.

Gray Chest: First Gear for Machine
The First Gear for Machine can be found in the Gray Chest. It is available as soon as the level is unlocked.

The way to the right contains posts, where Smash Attacking one will cause another to rise. The Gray Key is located above the second set of posts and can be reached by causing the second-from-right one to rise up high enough to reach on the platform to its left.

The chest is located to the right of the third and last set of posts, where the last of the posts must rise high enough to reach the platform. On this platform, a ladder will lead to the room with the Gray Chest.

After both the First Gear from this chest and the Second Gear from A Town in Chaos's Gray Chest are collected, the elevator machine in the east of the western side becomes operational to access the southern side of the world, opening the path to The Grasslands.

Red Chest: Skull Ring (blue)
The Skull Ring in the Red Chest requires the Magic Seeds from The Big Bridge's Gray Chest. This causes the vine underneath the rock to grow, pushing that rock to the top of the area and revealing a door behind it.

To the left of Wario from the beginning, a vine grew to the top of the area, allowing him to climb up on it. To get to the Red Key, Wario must climb the vine to the top of the area, and then travel all the way to the right through the treetops with Spearheads on the branches. Some leaves obscure the view of the branch platforms and the Spearheads behind them.

The Red Chest is behind the door to the left of Wario from the beginning. To reach it from where the Red Key is, Wario can either drop from the treetops to the bottom and then make his way to the left or traverse through the branches to the left and drop down from where the vine grew from.

After collecting the blue Skull Ring and the red one from The Vast Plain's Green Chest, the Tower of Revival is erected from the ground on the southern side after both rings click together.

Green Chest: Ornamental Fan
The Ornamental Fan in the Green Chest requires the Swimming Flippers from the Tower of Revival's Gray Chest. This allows Wario to swim underwater near the beginning to enter a door that leads to the key and chest.

To get to the entrance, Wario must go underwater from the beginning downwards and then to the right, where a Haridama is swimming to the left and right, and spike are up and right of the path leading to the door. The door leads to a large room with many currents. To get to the Green Key, Wario must go east at the first loop to reach a second loop, and then southeast at the second loop, leading to a path that leads to the Green Key.

From where the Green Key is, Wario must goto the left to another loop. To return to the first loop, Wario must go west from this one and then north-east in the loop after that. To reach the boss room, Wario must go east in the first loop and then east in the second loop. The door leads to a room, where going up the platforms from it will commence a boss battle with Wolfenboss.

Wolfenboss attacks by shooting gray wisps at Wario, which causes him to rise up to the ceiling if hit by them, similar in behavior as Bubble Wario. The boss can also throw spiked balls that triggers Puffy Wario if Wario touches it. After a while, the spiked balls on the ground will produce a Kuri, which requires a Dash Attack to knock it upwards diagonally where they can bounce on walls, to cause it to hit the boss. If Wario is hit by the boss's gray wisps or spiked balls, the boss will disappear as Wario floats out of the arena. To get back to the door to redo the boss battle, Wario must exit the door above, and then go south from the current loop to the left, then go right in the loop below it to reach the door. The boss is defeated after being hit three times by Kuri, causing the manhole to flip open, thus leading to the Green Chest.

The Ornamental Fan blows a gust of wind to extinguish a misty barrier in the south that obstructs the way to the eastern side of the world, thus making The Stagnant Swamp accessible.

Blue Chest: Crayon (yellow)
The yellow Crayon in the Blue Chest requires the Air-Pump from The Colossal Hole's Gray Chest, causing the glass container to float, thus making the door within it accessible.

The door, which is underwater in between the second and third set of posts, leads to a cave with Pneumos and Spearheads. The Blue Key is all the way to the right, underneath the thin platform. Thus, it has to be reached while avoiding the Pneumo that would trigger Puffy Wario.

The Blue Chest is instead to the left from the entrance. Rather than avoiding the leftmost Pneumo, Wario must instead lure it to the left so that it is below the Blue Chest, where Puffy Wario must be triggered to reach it.

The yellow Crayon flies to the tower on the northern side of the world. The crayon is used to color one part of the area that is initially monochrome. The yellow crayon colors the sign over the door. After the area is colored by seven different crayons, the Golf minigame there can be played.

Enemies

 * Para-Goom (3)
 * Haridama (3)
 * Spearhead (10)
 * Pneumo (5)
 * Kuri (found in the Wolfenboss battle)

Reaction abilities in this level

 * Puffy Wario (via Pneumo or Wolfenboss's spike)
 * Bubble Wario (unique variant via Wolfenboss' energy balls)