First you have to have the National Pokedex (catch 60 pokemon before/after the pokemon league) then put a lv 40 in the first of your party, then fly to Vermilion City. Go up before the underground path that leads to celadon, and right before that next to the patch of grass, use a max repel. Wait for its battle. To catch it do not waste your time using Mean Look and other stuff.I caught him with Master Ball, but when I looked at its moves they were: Fire Spin, Ember, something else, and Roar! So if you use Mean Look he'll use roar. So there is no point.
If you are only in possession of one game you can't get all the pokemons since there are different pokemons in each game and because you often only can choose on pokemon out of a few (Charmander, Squirtle or Bulbasaur. Omastar or Kabutops. Suicune, Entei or Raikou. Etc.) Unless ofcourse you make use of gameshark or codebreaker codes. There are also some Pokemon which are unobtainable for you if you haven't participated in different events, such as Ho-Oh, Lugia, Celebi and so on.
I believe it is just what Pokemon appear in what location, how often they appear, and what legendary you meet. And White Forest vs Black city (go to serebii.net to find out what those are.)
Keep watching TV's! These deparment sales appear more often after you beat the Pokemon league.
It is not often that you see a shiny Pokemon. They are pretty rare but you can still look if you want :P!
After you turn on the game and the first time mirror b appears and you beat him then everytime after it takes about 10 minutes each time for him to reappear again.
Digletts are the only Pokemon in Diglett's cave but they appear so often that when you take your first step into the cave that there is a 7 out of nine chance a Diglett will appear
Entei, Raikou and Suicine are often referred to as the Legendary Beasts or Legendary Dog pokemon. They aren't in Diamond, so you'll have to trade or migrate them. You can do this from the following games: FireRed/LeafGreen, HeartGold/SoulSilver and OmegaRuby/AlphaSapphire.
wild pokemon? my guess is that it's random
It makes wild Pokemon appear more often :( or :)
below 50%
Route 229 in the morning.I's often appear but it will not appear at evening,afternoon,and night.
If you are only in possession of one game you can't get all the pokemons since there are different pokemons in each game and because you often only can choose on pokemon out of a few (Charmander, Squirtle or Bulbasaur. Omastar or Kabutops. Suicune, Entei or Raikou. Etc.) Unless ofcourse you make use of gameshark or codebreaker codes. There are also some Pokemon which are unobtainable for you if you haven't participated in different events, such as Ho-Oh, Lugia, Celebi and so on.
Skitty does not appear in Rusturf Tunnel. Only Whismur are there.
they appear from a line of 1/8000 if you do encounter one, congrats your very lucky!
I believe it is just what Pokemon appear in what location, how often they appear, and what legendary you meet. And White Forest vs Black city (go to serebii.net to find out what those are.)
The white flute makes Pokemon appear more often.
Keep watching TV's! These deparment sales appear more often after you beat the Pokemon league.