I doubt there will be much more to add that is not basic knowledge since they are sadly almost a hundred percent the same, but you could always add some of the more key stuff.
Shiny Pokemon still do not appear in the overworld, you have to enter the Pokemon encounter to find out.
Poke Radar is obtained after completing National Pokedex. Grasses will shine a goldish color if it is a Shiny Pokemon.
You obtain the National Pokedex by SEEING all the Pokemon in the Sinnoh Pokedex.
By completing the National Pokedex and CATCHING every Pokemon, you obtain the Shiny Charm. Increases finding Shiny Pokemon like usual.
All trainers and their Pokemon remain the same as the original Diamond and Pearl. Only difference is that Gym Leader and Elite Four Rematches are crazy strong. Champion Cynthia is strongest trainer ever during second rematch.
Shadow Giratina strongest Wild Pokemon Battle ever at Level 100. Sadly cannot be captured.
Mystery Gift can be activated as soon as first city. But if skipped at that point, it will automatically be gained after defeating the third Pokemon Gym.
You can also obtain what is called DS Sounds. Just allows players to listen to the classic tunes from Diamond and Pearl.
Thats about it, Dennis. If you want any other tips, just use what is in the Diamond and Pearl stuff already on the site. Pokemon Legends Arceus is going to be the big one in February. Breath of the Wild imitation with 7 New Pokemon, 17 New Hisuian Forms, Primal Dialga, Primal Palkia, and most likely Primal/Mega Arceus and Giratina. Contents of Arceus will also connect to 9th Generation, which is rumored to be coming in Fall 2022.
« Last edited by Warrior13 on Nov 19th 2021 »