Well, first of all you must beat the main storyline. After you do that, you sadly must beat everything that you can do AFTER the main storyline before you unlock the final chapter in Gengar's story.
Mew isn't available as a starter in Pokemon Mystery Dungeon.
No, only joy seeds are available in Mystery dungeon Blue and Red
Curently, Pokemon Mystery Dungeon: Blue Rescue Team is out and available all around the world.
Actually Cubone is available for a starter in Pokemon mystery dungeon (red, as far as I know) as long as you display a lonely personality for the questions in the beginning.
A dungeon is a cave on pokemon mystery dungeon. It is a level with a series of floors/rooms and the object is to get to the end of the dungeon.
Pokemon mystery dungeon explorers of time.
Pokemon cannot be traded in the Mystery Dungeon series.
No.
MYSTERY JUNGLE..veronica
No, you can not get Lucario in Mystery Dungeon Blue.
No, but there is an anime special for both Mystery Dungeon games.
NO