Appendix:Emerald walkthrough/Section 13

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Mossdeep City

Mossdeep City

Mossdeep City stands perched on an island near Hoenn's eastern edge, where the winds are mild and the weather conditions are stable. This makes it the perfect place for launching rockets, and a perfect home for the Mossdeep Space Center. The seventh Gym in the Hoenn League, run by twin Gym Leaders, is located on the north side of the island, and Steven's house can be found on the island's northwest corner.

Move Tutor

The first person you meet upon arriving in Mossdeep is a Black Belt in the shallow water on the island's southwest side. As a Fighting-type Trainer, he's had a difficult time at the local Gym and has resorted to punching the ground to relieve his frustration. Speak to him, and he offers to teach the move DynamicPunch to a Pokémon, one time only.

Steven's House

The house on the island's northwest edge belongs to Steven, and contains part of his rock collection.

Game Corner

A Game Corner is located to the south of the Poké Mart. Inside, Trainers can compete with others from HoennE and KantoFRLG in two mini-games, Pokémon Jump and Dodrio Berry Picking. Communications are made using the Game Boy Advance Wireless Adapter.

Running Errands

Visit the house nearest the stairway to the Space Center to meet a young woman who uses a Wingull to send letters to a friend in Fortree City. Talk to the Wingull and it will take flight, off to deliver another note. If you return to Fortree and visit the Pokémon Breeder in the northeast house there, he will give you a Mental Herb that his Wingull found in its travels.

Score the Super Rod

The house overlooking the Gym belongs to a lone Fisherman. Speak to him to receive the Super Rod, a high-end fishing rod that can reel in all kinds of sea life.

Mossdeep Space Center

The Mossdeep Space Center stands on a hill in the northeast. Steven is inside, standing near a table with a letter emblazoned with the Team Magma logo. It seems that the group has announced its intention of stealing all the rocket fuel on the island. He plans to keep an eye on things for now, and suggests checking out the rest of the city. A Sailor near the viewing area will give you a Sun Stone he found on the beach.

Mossdeep Gym

Mossdeep Gym

Mossdeep City Pokémon Gym
Leaders: Liza & Tate

The mystic combination!

The Mossdeep Gym specializes in Psychic-type Pokémon, which are vulnerable to Bug-, Dark-, and Ghost-type moves. Dark Pokémon are both immune to Psychic moves and able to inflict super-effective damage. Avoid using Fighting- and Poison-type Pokémon. The Gym features several rooms linked only by warp tiles. Each room contains Trainers and obstacles on spin tiles that rotate when certain tiles are stepped on, changing the path and often bringing challengers within view of opposing Gym Trainers.

Step on the yellow tile in the first room to start a Double Battle with Psychics Preston and Maura, then go north to the warp tile. The second room is located a short distance northward; step on the yellow tile here to begin a Double Battle with Psychics Samantha and Drake. There are two warp tiles beyond them; take the right warp to the southeast room first. Step on the first purple tile to begin a battle with Hex Maniac Kathleen and Psychic Nicholas. Go south and step on the second purple tile twice to battle Gentleman Clifford and Psychic Macey. Continue south and step on the green tile twice; this spins the obstacles in the south-central room. Take the north warp back to the west-central room, then the left warp there to the northwest room. Step on the first blue tile twice, the orange tile three times, the second blue tile three times, and the first blue tile once to reach the warp tile. Cross the south-central room to the last warp and the Gym Leaders' room.

Twins Tate and Liza send out two Pokémon at once, drawing challengers into a Double Battle. Claydol can boost its already-high Special Defense with Light Screen, and retaliate against Bug Pokémon with AncientPower. Xatu's Calm Mind raises both its Special stats, and Confuse Ray allows it to harass the foe. Lunatone can lull its opponent to sleep with Hypnosis, while Solrock can scorch Grass Pokémon looking to target their Rock typing. Three of their Pokémon are weakened by Water moves; by using Surf, you can attack both at once and bring the battle to a quick end. Otherwise, you may want to target one Pokémon at a time in what would essentially become a two-on-one battle.

Mossdeep Gym
The Mind Badge

After the battle, Tate and Liza award you the Mind Badge, which boosts your Pokémon's Special Attack and Special Defense by 10% and enables the use of Dive in the field. The twins also give you TM04 (Calm Mind) as a prize, and register themselves in your PokéNav.

Space Center

After beating the Gym, you find Maxie and several Grunts on their way to the Space Center. Follow them inside and defeat the four Grunts on the first floor. Upstairs, you are ambushed by three more; you fight them one at a time, but with no break between. Farther on, you find Steven confronting Maxie, who reveals his intentions for the rocket fuel. With Groudon gone, he has no need for their base. They're going to cause Mt. Chimney to erupt by dumping the entire supply into the volcano! Steven is shocked, and asks you to join him in battle against Maxie and Tabitha. Steven's team consists of Metang, Skarmory, and Aggron.

VS Maxie, Tabitha

Having failed at both controlling Groudon and activating the volcano, Maxie begins to questions his goals and wonders if Team Aqua's plans are equally misguided. Maxie and his subordinates flee, and Steven invites you to his home. He greets you when you step inside, and hands you HM08 (Dive). In certain bodies of water, there are dark spots where the water runs unusually deep; using Dive at one of these spots lets you descend to the ocean floor far below. Swim to a point where the sunlight filters down from above and use Dive again to surface. With this move, you will be able to pursue Archie to the Seafloor Cavern.

Route 125

Route 125

Located north of Mossdeep City, Route 125 is an optional area with several potential Secret Base locations. The waterlogged Shoal Cave stands in the route's center.

Shoal Cave, Entrance (high tide)
Shoal Cave, Entrance (low tide)
Shoal Cave, Second Cavern (high tide)
Shoal Cave, Second Cavern (low tide)
Shoal Cave, Ice Cavern (low tide)
Shoal Cave, Third Cavern (low tide)
Shoal Cave, Fourth Cavern (low tide)

Shoal Cave

Connected to the ocean, the appearance of Shoal Cave changes with the tides. Seawater floods the cave during high tide, closing off some areas and opening others. It then drains away during low tide, revealing new areas for exploration. The tides change every six hours, at 3:00 and 9:00.

High tide


An old man in the entry chamber offers to make a Shell Bell for your Pokémon. But first, he needs you to collect some of the cave's natural resources: Shoal Shells and Shoal Salts. These items are replenished each day, so there's no limit to the number you can collect. Once you hand over four of each item, he crafts the health-restoring item for you. Surf northwest and take the doorway there to reach the next chamber.

Second Cavern

Surf along the water in a clockwise direction, collecting the four Shoal Shells and a Rare Candy on the way. Take the southeast doorway back to the entrance, where you can collect a Big Pearl on the nearby ledge.

Low tide


An old man in the entry chamber offers to make a Shell Bell for your Pokémon. But first, he needs you to collect some of the cave's natural resources: Shoal Shells and Shoal Salts. These items are replenished each day, so there's no limit to the number you can collect. Once you hand over four of each item, he crafts the health-restoring item for you. Head through the north doorway to reach the next chamber.

Second Cavern

Head up the stairway, go north and climb down the east-central ladder.

Fourth Cavern

Grab the Shoal Salt and Ice Heal, then climb the hill to the ladder in the northwest.

Second Cavern

Go west then south along the two bridges, then climb down the ladder in the center.

Third Cavern

Head east to meet a Black Belt and receive a Focus Band from him. Continue east to find another Shoal Salt, then use Strength to move the boulder eastward and descend the ladder to the south.

Ice Cavern

The final cavern is permanently encased in ice, and the slick floors hinder travel. Go south from the ladder, across two ice patches. At the third ice patch, slide west to the second snow patch within it. Slide north, then west and south to the third small snow patch. Slide south, east, then north to continue on. Slide north to the snow patch near the narrow stairway. Move west then south to a rock, then east and north to the central plateau and the Never-Melt Ice on its south end. Slide south from the narrow stairway, then west and north to reach the northwest corner. Go east then south to a snow patch, then north to a rock near the room's northwest corner. Head east, south, and west, then move north, west, south, and west to the small snow patch. Slide north, east, then south to reach TM07 (Hail) and jump the ledge to return to the ladder.

Route 127

Route 127, Underwater
Route 127, Surface

Route 127 links Mossdeep City with Route 126 to the west and Route 128 to the south. Explore the area quickly on your way southward in pursuit of Team Aqua!

← Part 12 Team Aqua Hideout, Route 124
Route 128, Seafloor Cavern, Route 126, Sootopolis City, Cave of Origin Part 14 →

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