Before I begin, I'm sure many PokeFans had grabbed their hand on Pokemon Diamond/Pearl just as I did. Those who played Pokemon Diamond/Pearl will surely go to GameFaqs to search for topic related to their questions such as version exclusive pokemon, where to catch, how to catch, where to evolve, etc..
However, the board topics in GameFaqs is just totally huge. Most of the time you won't be able to find your answer there though. So I had decided to spent some of my free time compiling those information for sharing purpose.
* If you have any question, feel free to leave comment and I'll reply to your answer as soon as possible.
Index
A. Version Exclusive Pokemon
B. Most Requested Pokemon Catching Location
C. Side-Quest
--> 1. Swarming Pokemon
--> 2. Pokemon Mansion
D. Most Requested Item Location
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A. Version Exclusive Pokemon------------------------------------
Diamond Exclusives:
Seel
Dewgong
Scyther
Murkrow
Scizor
Larvitar
Pupatar
Tyranitar
Poochyena
Mightyena
Aron
Lairon
Aggron
Kecleon
Cranidos
Rampardos
Honchkrow
Stunky
Skuntank
Dialga
Pearl Exclusives:
Slowpoke
Slowbro
Pinsir
Slowking
Misdreavus
Houndour
Houndoom
Stantler
Spheal
Sealeo
Walrein
Bagon
Shelgon
Salamence
Sheildon
Bastiodon
Mismagius
Glameow
Purugly
Palkia
Third Generation Exclusives:
Bulbasaur
Ivysaur
Venusaur
Charmander
Charmeleon
Charizard
Squirtle
Wartortle
Blastoise
Articuno
Zapdos
Moltres
Mewtwo
Mew
Chikorita
Bayleef
Meganium
Cyndaquil
Quilava
Typhlosion
Totodile
Croconaw
Feraligatr
Raikou
Entei
Suicune
Lugia
Ho-oh
Celebi
Treecko
Grovyle
Sceptile
Torchic
Combusken
Blaziken
Mudkip
Marshtomp
Swampert
Regirock
Regice
Registeel
Latias
Latios
Kyogre
Groudon
Rayquaza
Jirachi
Deoxys
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B. Most Requested Pokemon Catching Location
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For the location, I just list down the location where you'll most likely meet them just as I did.
#117 SeadraPrevious Evolution: Horsea
Evolve into: Kingdra (Item: Dragon Scale)
Rarity: Common
Location: Route 226 (Fish with Super Rod)
#120 Staryu
Evolve into: Starmie (Item: Water Stone)
Rarity: Uncommon
Location: Sunyshore City (Fish with Super Rod)
Location Info: Fish at the sea (north) of the city
#175 Togepi
Evolve into: #176 Togetic (Happiness) -> #468 Togekiss (Item: Shiny Stone)
Rarity: Rare
PokeRadar Required
Location: Route 230
#215 Sneasnel
Evolve into: #461 Weavile (Time: Night / Item: Razor Claw)
Rarity: Common
Location: Snowpoint Temple (accessible after getting National Dex)
#343 Baltoy
Evolve into: Claydol (Lv.36)
Rarity: Rare
PokeRadar required
Location: Route 206
#355 Duskull
Evolve into: Dusclops (Lv.37) -> Dusknoir (Item: Reaper Cloth)
Rarity: Rare
PokeRadar required
Location: Route 224
#371 Bagon
Evolve into: Shelgon -> Salamence
Rarity: Rare
PokeRadar required
Version Exclusive: Pearl
Location: Route 210 (North)
#425 Drifloon
If you visit Valley Windworks on every Friday after obtaining two badges, you'll find Drifloon (appeared as a sprite) standing outside the building entrance during daytime
#443 GibleEvolve into: #444 Gabite (Lv.24) -> #446 Garchomp (Lv.48)
Rarity: Rare
Location Info:-Gible is located in Wayward Cave near the Cycling Road in Route 206. Please note that there are two entrances to the cave. After going south on the Cycling Road, head east and use Cut on one of the two bushes in your way and then head north until you see the first entrance to the cave. Now, go UNDER the Cycling Road and keep pressing up/moving over until you find the SECRET, un-seeable, entrance. Once inside you will need to use the HM Strength (requires 6th gym badge) and then go down the stairs. Gible is located in this area, however, it is uncommon so you may need to walk around for a while before encountering one.
#460 - Abomasnow (Rare)Upon reaching Mt. Coronet Top. Use Rock Climb at the right side and you'll find a patch of grass with a single stone at the center of the right. Just keep running at the grass and eventually you'll find it
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C. Side-Quest
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1. Swarming Pokemon
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After obtaining the National Dex, return to Sandgem Town and enter your other
rival's house. If talk to her sister, she will tell you about the location
where rare Pokemon are appearing in large numbers. Both the Pokemon and the
location change every day. The full list of possible Pokemon is below.
#016 Pidgey
#081 Magnemite
#083 Farfetch'd
#084 Doduo
#096 Drowzee
#098 Krabby
#100 Voltorb
#104 Cubone
#108 Lickitung
#114 Tangela
#177 Natu
#206 Dunsparce
#209 Snubbull
#220 Swinub
#222 Corsola
#225 Delibird
#231 Phanpy
#238 Smoochum
#263 Zigzagoon
#283 Surskit
#287 Slakoth
#296 Makuhita
#299 Nosepass
#300 Skitty
#309 Electrike
#325 Spoink
#327 Spinda
#359 Absol
#374 Beldum
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2. Pokemon Mansion
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You can visit the mansion any time after seeing your Rival in Hearthome City.
To get there go south of Hearthome City onto Route 212.
In the back of the mansion there is a trophy garden. You can find several
Pokemon in the grass, but none of them are too rare. Once you obtain the
National Dex, return to the mansion and speak with the owner. He will tell
you of a rare Pokemon that can be found in the garden. The Pokemon will
change everyday. Up to two rare Pokemon can be in the garden, and everyday
you speak with him, one of them will change. The complete list of possible
encounters is below.
#035 Clefairy
#039 Jigglypuff
#052 Meowth
#113 Chansey
#133 Eevee
#137 Porygon
#173 Cleffa
#174 Igglypuff
#183 Marill
#298 Azurill
#311 Plusle
#312 Minun
#351 Castform
#438 Bonsly
#439 Mime Jr.
#440 Happiny
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Most Requested Item Location
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Super Rod
After getting your National Dex, fly to Battle Area. Head east a bit then head north until you see a fisherman standing at the front of the entrance.
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Tips
-> Adventure Tips
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1. Before you begin your adventure, just like all the previous PKMN version, you'll have the option to choose one pokemon from the three starters. For beginner, I suggest you to choose Chimchar as it's final evolution which is dual type (Fire/Fight) will get you through the entire game with hasty speed without any problem.
2. Leveling your starter PKMN in the early stage of the game is highly recommended if you do not plan to level up your PKMN in the later stage, which could take more time. You should train till at least lv 10 with your starter PKMN before advancing to Sandgem town. It might take 5-10 minutes but it's worth it.
3. For multi-purpose HM PKMN, try and capture Bidoof (Cut), Marill (Surf/Waterfall) and Geodude (Rock Climb, Strength, Rock Smash) as soon as you meet them as they're a helpful to learn those HM and easy to find.
4. Do not run away from Trainer battle. If you meet a trainer, fight him/her. You could gain money and experience by battling them. Besides, you can complete your Sinnoh Pokedex by battling them as each trainer uses different type of PKMN, thus make you to get National Pokedex even sooner. Note that the requirements to get a National Pokedex is to meet all 150 PKMN in the Sinnoh Pokedex. If you battled every single trainer throughout the game, you'll find yourself to have met 149 PKMN in your Sinnoh Pokedex. For the #150, simply fly to Celestial Town and talk to a grandmother in the northern side house and you'll see a picture of Dialga (for Pearl) or Palkia (for Diamond)
5. Depend on your playing style, training one PKMN (starter) is sufficient enough to beat Elite Four (lv 65+) with the help of Full Restore and Max Elixer/Ether.
6. Do not waste your Masterball on version exclusive PKMN such as Dialga (Diamond) and Palkia (Pearl) as their catching rate is higher than other legendaries.
7. Always equipped yourself with Antidote, Burn Heal, Paralyze Heal (each 5) to save your time for going to PKMN center just to heal those status effect.
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-> Battle Tips
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1. In order to win a battle with the short amount of time possible, always choose a move that will gain 'super effective' hits to them. You can learn more about each type weaknesses at gamefaqs.com
2. Stat raising move such as Defense Curl, Agility may be useless for many novice PKMN players at the beginning stats. However, those effect may just turn the tide of the entire battle if the PKMN had reached LV 100.
3. Nature, Individual Values (IV) and Effort Values (EV) are the three most important aspect for raising a good PKMN. Refer to gamefaqs for more information about that.
4. Always make use of the Same Type Attack Bonus (STAB) move as it will give you 1.5x more attack power if the type of the move match the type of the PKMN.
5. Held Items, especially Berries will be able to change the result of a battle.
6. When battling an opponent, you must be very good in predict which move will they use to counterattack in order to strive. Switching PKMN will sometimes proof to be an ideal choice when the foe's PKMN seems to be a disadvantage to your current battling PKMN. And most importantly, never underestimate your opponent. You'll never know what can a Pichu do :P
7. Even if a move does not count towards STAB, it may sometimes necessary to learn just to counter your foe's PKMN. For example, it's never wrong for Tyranitar (Rock/Dark) to learn ThunderFang as your opponent may use Water type PKMN to counter your PKMN. Even STAB does not apply to that move, you could somehow lower your foe's HP to a considerable good amount of HP left.
8. In the fourth gen, all move set had been arranged in a new way, which include an special icon behind each move set - Physical and Special. For Physical move, the attack base value is count towards the Attack stats for a PKMN and for Special move, the attack base value is count towards the Special Attack stats for a PKMN.
9. Always use a move that utilize the highest stats for you PKMN. E.g. - it's a 100% bad choice for Alakazam to learn Thunderpunch, Icepunch as the attack value is count towards the Attack stats. It's a bad choice as Alakazam has the highest stats on it's Special Attack value compared to it's Attack value.
10. Try and make a team consisting of one or two defensive PKMN just to inflict status effects upon your foes. A Physical/Special sweeper team will likelihood to lose very easily without a defensive/tanker.
11. Your team should not consist with only one type. Try and make a team with a combination of all different type.
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-> PKMN type
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1. Dual Type PKMN is good as there can have at least 2 STAB move set with them. However, they'll also seems to have double weaknesses at the same time.
2. Dual Type PKMN can somehow cover their other type weaknesses, thus making a super-effective hits (2x) for one of it's type covered. As a result, it will count as normal damage (1x). For example, Metagross. As we all know, Psychic PKMN is weak against Dark attack and will get super effective hits from Dark attacks. However, with it's Steel type covered which Dark move will get Not effective hits with, the damage will count as Normal damage (1x). Isn't it just cool?