Walkthrough:Pokémon Diamond and Pearl/Part 1
These pages follow the original Nintendo DS iteration, not Pokémon Brilliant Diamond and Shining Pearl. The guide for those games can be found here.
Introduction
Press the A Button or Start on the title screen to begin. The resident researcher of the Sinnoh region, Professor Rowan, appears and introduces himself before asking the player if this is their first adventure. The player is then presented with three options: Control Info, Adventure Info, and No Info Needed.
Control Info explains the various buttons and their effects.
| Input | Effect(s) |
|---|---|
| +Control Pad | Move character; move cursor in a menu |
| A Button | Interact with people and the environment; select menu options |
| B Button | Cancel a selection; exit a menu |
| X Button | Open the main menu |
| Y Button | Use a registered Key Item |
| Touch Screen | Use context-specific buttons |
In addition, it explains that tapping on the Touch Screen can be used to confirm selections and advance conversations. Different buttons may be displayed depending on the situation. If the dual-screen icon is shown in the message window, then there are active buttons that may be pressed on the Touch Screen.
Adventure Info gives background information about the player's "grand adventure". It is recommended that the player speak to everyone they find and investigate things wherever they may be, as doing so gathers the information needed to overcome challenges, solve mysteries, and discover the way forward. By overcoming the challenges posed by other Trainers and wild Pokémon, the player will grow stronger, but this is not the game's only goal. The more important objective is the hope that the player meets countless people and, through them, achieves personal growth.
Select No Info Needed to proceed, and Professor Rowan introduces new Trainers to the Pokémon world. The image of a Poké Ball appears on the Touch Screen, and Rowan asks the player to tap the button in the middle; doing so causes a Munchlax to appear. The player is soon prompted to select a gender for their character, and to enter the character's name. On this screen, pressing the A Button will select a letter while pressing the B Button or selecting Back will delete the previous one. A custom name may be up to seven characters long. Pressing Select cycles through three pages of alphanumeric text and symbols. When ready, tap the OK button. Rowan then introduces the player's friend and asks for his name, as well. With that done, the player is transported into the world of Pokémon to begin their adventure!
Twinleaf Town

The journey begins in Twinleaf Town, in the southwest part of the Sinnoh region. It is a rather small, quiet town where the scent of fresh leaves hangs in the air. The southeastern house belongs to you and Mom, while the northwestern one is home to your friend, Barry. The north side of town leads to the tall grasses of Route 201.
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Home
2F
The journey begins in your bedroom, where a special news report is airing on television. Despite their best efforts, it seems that a team of explorers has failed to encounter their target: a rare, oddly-colored Gyarados. The report, titled "Search for the Red Gyarados", soon ends.
The PC in the corner provides basic information about the Pokémon world, and a sign on the wall reads, "The X Button opens the menu!". The main menu currently includes four entries. Bag serves as item storage, with eight different pockets and enough space to hold up to 999 of every item. <Player> displays a Trainer's Trainer Card, which displays adventure information like the amount of money on hand and the number of Badges obtained. Save allows the player to record any new progress; when the message "<Player> saved the game!" disappears, it is safe to exit the game. Options allows the player to alter settings like Text Speed.
1F
Immediately upon reaching the first floor, you are approached by your mother. It seems that Barry was here looking for you a short time ago in what was apparently an emergency, but left before Mom could learn anything more. When you go to leave the house, she warns against venturing into the tall grass on your own, as it can be dangerous without a Pokémon of your own for defense against wild Pokémon.
Finding Barry
When you reach the door to Barry's house, he is rushing outside at the same time and bumps into you with a loud thud. When he sees who it is, he says that he is headed to the lake, and promises to fine you $1,000,000 if you do not follow quickly! He begins to leave, but soon realizes that he forgot something, and runs back inside.
Barry's house
2F
On the second floor, Barry is still trying to decide what to bring along. When he notices you, he says that he will be waiting for you on the road, and increases the threatened fine to $10,000,000 if you are late!
Route 201

Route 201 is a small path through a lush, wooded area. This path connects Twinleaf Town to the south, Verity Lakefront to the west, and Sandgem Town to the east.
Catch Up to Barry
Barry can be found waiting just north of Twinleaf Town. When you approach, he asks if you saw the news report about the oddly-colored Gyarados in some far-off lake. The segment has given him the idea that the nearby Lake Verity could have a similarly amazing Pokémon in it, and he wants the two of you to go and find it. He now follows along behind you, so lead the way westward to Verity Lakefront.
Verity Lakefront

Verity Lakefront is a short stretch of land that runs between Route 201 and Lake Verity.
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Follow the Leader
Upon reaching the entrance to Lake Verity, Barry pulls you along behind him as he excitedly rushes ahead to the lake.
Lake Verity


Lake Verity is one of several large lakes that serve as symbols of the water-rich Sinnoh region.
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An Unsuccessful Search
On the shoreline, you find Professor Rowan and his his assistant, Dawn/Lucas. They seem to be searching for something, as Rowan's assistant reports that there is nothing on the other side of the lake, either. Rowan is disappointed and the two prepare to leave when Dawn/Lucas asks him if he is happy to be back in Sinnoh after traveling for the last four years. Rowan says simply that there are many rare Pokémon in Sinnoh, and that the region should serve them well in their studies. They turn to leave, pushing past you and Barry on their way back to Verity Lakefront.
Ambush!
Afterward, Barry notices something in the nearby patch of tall grass. He downplays the threat of attack by wild Pokémon and examines the object, which turns out to be a briefcase left behind by Rowan's assistant. Barry is wondering what to do with it when the two of you are suddenly attacked by a pair of wild Starly! Hoping to find something to defend himself, Barry quickly opens the briefcase and notices three Poké Balls. Choose one of the Pokémon inside to fend off the attack!
Choose Your Fighter!
Turtwig, the Tiny Leaf Pokémon
The Grass-type Turtwig does well against Water-, Rock-, and Ground-type Pokémon. It also has the most weaknesses of the trio, and fares poorly against Fire-, Flying-, Bug-, Poison-, and Ice-type attacks. Turtwig and its evolutionary family excel in physical Attack. As it grows, it gains a secondary Ground type.
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Chimchar, the Chimp Pokémon
The Fire-type Chimchar is great when battling Grass-, Bug-, Ice-, and Steel-type Pokémon, but is vulnerable to Water-, Rock-, and Ground-type moves. Chimchar and its evolutionary relatives excel in Speed. As it grows, it gains a secondary Fighting type.
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Piplup, the Penguin Pokémon
The Water-type Piplup has an advantage when facing Fire-, Rock-, and Ground-type Pokémon, but may struggle against Grass- and Electric-type attacks. Piplup and its evolutionary family excel in Special Attack. As it grows, it gains a secondary Steel type.
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Once you have chosen a Pokémon, Barry takes the one with a type advantage against your own, and the two Trainers fight off the attacking Pokémon.
Afterward, Barry points out that the two of you were forced to battle with the Pokémon from the briefcase, even though they belong to someone else, and wonders if it could get the two of you into trouble. Rowan's assistant returns a moment later to search for the forgotten briefcase, and worries that the professor would be furious to realize it was left behind. Realizing that the Pokémon inside were involved in battle, Dawn/Lucas fears what Rowan will say, and hurries off with the briefcase. Barry is eager to leave the area and avoid another attack, and leads you back to Verity Lakefront.
Verity Lakefront
Having survived the attack at the lake, Barry reluctantly admits that the two Pokémon must be returned to whom they belong. He then accompanies you again on the way back to Twinleaf Town.
"Pokémon" now appears on the main menu.
Route 201
Professor & Assistant
As you and Barry backtrack through Route 201, he points out the professor and his assistant up ahead. Rowan has learned of the events at the lake, and asks to see the two Pokémon involved. After examining them for a moment, he tells Dawn/Lucas that he is heading back to his lab. His assistant invites you to visit them there, and hurries after him. Barry is surprised that Rowan didn't yell or demand the Pokémon returned. He suggests that the two of you should go home, and you find yourself instantly returned to Twinleaf Town.
Twinleaf Town
Home
1F
Back at home, you recount the events at the lake to Mom, who is glad to hear both you and Barry are unharmed. She mentions that the man is most likely Professor Rowan of Sandgem Town, and suggests that you visit him there to properly explain why you had to use his Pokémon in battle. Mom then gives you a pair of Running Shoes to help make the trek a bit faster. She reads the instructions: "Press the B Button and dash about faster than ever before! Put on the Running Shoes and blaze new trails of adventure!".
| This article is part of Project Walkthroughs, a Bulbapedia project that aims to write comprehensive step-by-step guides on each Pokémon game. |