History VideoGame / PokemonDiamondAndPearl

* UniqueEnemy: Prior to getting the National Dex, some Pokémon cannot be encountered as opponents in the wild and are only used by a single, not story-bound, trainer. These Pokémon include Bastiodon, Machamp, Wormadam, Clefable, and Riolu. If you select a starter other than Infernape, Empoleon is this as well (otherwise, your rival will have one).

** Prior to receiving the National Dex, you can draw a lottery ticket in Jubilife City, and fight a new trainer in the same place. Various other places have daily trainer battles as well. You can get two berries in Floaroma Town and Route 208, respectively, you can give your Pokémon a massage (two in ''Platinum''), some vendors change their daily stock, and the Pokémon encountered in the Great Marsh change. There's a sidequest at Solaceon Town where you can get Heart Scales in exhange of showing a random specific Pokémon to the requester, which can be repeated every day.

** Prior to receiving the National Dex, you can draw a lottery ticket in Jubilife City, and fight a new trainer in the same place. Various other places have daily trainer battles as well. You can get two berries in Floaroma Town and Route 208, respectively, you can give your Pokémon a massage (two in ''Platinum''), some vendors change their daily stock, and the Pokémon encountered in the Great Marsh change.

* UniqueEnemy: Prior to getting the National Dex, some Pokémon cannot be encountered as opponents in the wild and are only used by a single, not story-bound, trainer. These Pokémon include Bastiodon, Machamp, Wormadam, Clefable, and Riolu. If you select a starter other than Primeape, Empoleon is this as well (otherwise, your rival will have one).

As part of the franchise's [[MilestoneCelebration 25th anniversary]], a pair of [[VideoGameRemake remakes]] for the Platform/NintendoSwitch, ''Pokémon Brilliant Diamond'' and ''Pokémon Shining Pearl'', were released on November 19, 2021. Unlike previous remakes, this set is [[ShotForShotRemake fairly faithful to the original release with no plot alterations]], with the only major differences being a revamped Sinnoh Underground, overhauled Contests and replacing the Pal Park with Ramanas Park, a place to catch Legendary Pokemon. As a by-product of the strict adherence to the original pair of games, most of the changes and additions made by ''Platinum'' (such as the Distortion World) did not make it into the remakes. Notably, due to Creator/GameFreak being busy with the development of ''VideoGame/PokemonLegendsArceus'' and ''VideoGame/PokemonScarletAndViolet'', ''Brilliant Diamond'' and ''Shining Pearl'' were the first games in the mainline series to be developed by an outside studio, that being [=ILCA=], Inc.

* RandomSpeciesOffspring: Manaphy is the first out of any legendary and mythical Pokémon that can reproduce in a main series game. However, its offspring is not another Manaphy, but Phione, which cannot evolve into Manaphy under any circumstances.

* NightmareWeaver: The mythical Pokémon Darkrai can cause nightmares. One sidequest involves saving the son of a sailor in Canalave City, who is perpetually trapped in nightmares caused by Darkrai.

* WhenTreesAttack: Snover and Abomasnow are a new Pokémon evolution line. They are snow-covered bipedal trees of the Grass/Ice dual type.

* ArtisticLicenseExplosives: The bomb that Team Galactic uses to blow up Lake Valor. It is powerful enough that the impact can be felt in Canalave City at the other side of Sinnoh, and yet it just perfectly empties the huge lake off its water, leaves all the Magikarps alive (who twiggle around helplessly) and the nearby Hotel Grand Lake doesn't get as much as a scratch either. And they did all that only to get the legendary Pokémon Azelf, who they could have easily killed with that bomb as well.

* VisibleSilence: EliteFour member Flint reacts like this when you defeated him. If you talk to him again after this fight, he'll merely state "... ... ... Go on..."

* CosmicEgg: These games established the origin myth of the Pokémon universe: In the beginning there was only chaos, and in this chaos there was a single egg, from which Arceus hatched. Arceus them created three more eggs, from which Dialga, Palkia, and Giratina hatched. Lastly, he created an egg from which the Lake Trio emerged.

* DivineAssistance: Happens in ''Diamond'' and ''Pearl''. Just when Cyrus would have succeeded with the creation of his new universe, the Lake Trio, who have previously been freed by the protagonist, appear, destroy the red chain that had bound Dialga/Palkia, and thereby make the new universe collapse.

* PermanentlyMissableContent: ''Platinum'' is the first game in the series to avert this with catching the legendary Pokémon. In ''Diamond'' and ''Pearl'', legendary Pokémon would be unobtainable for the rest of the playthrough if you fled or defeated them, just as in all games before these. Starting with ''Platinum'', you can battle them again after beating the Pokémon League.

** Route 210 is blocked by a group of Psyduck, which you could've defeated easily, but instead you have to get a Secret Potion because they have headaches.

* CosmicEgg: These games established the origin myth of the Pokémon universe: In the beginning there was only chaos, and in this chaos there was a single egg, from which Arceus hatched. Similarly, the Lake Trio is said to have hatched from a single egg.