After you beat the story line there is really no order to the dungeons. So If you haven't try and beat Joy Tower, Wish Cave, and some other forest one with celeby
Mewtwo is on the 99th floor of western cave
it's the same as the pokemon mystery dungeon red rescue team. you can find mewtwo in the western cave once you recruited ho-oh.
he's in western cave
99 and at the end is mewtwo
the most powerfull Pokemon is mewtwo but people think its areceus when its not on Pokemon explores of time it is darkrai on darkness it is mewtwo on platinum it is mewtwo on dimond it is mewtwo on pearl it is mewtwo on blue rescue team it is mewtwo on red rescue team it is mewtwo on chores black it is mewtwo on ruby it is once again mewtwo i could go on for ever but i am trieng to make my point :)
Some Pokemon do, others come with their own areas EG. Mewtwo
to get mewtwo in red rescue team or Pokemon leaf green or fire red?
jirachi
In Western Cave (You Can Also Find Mewtwo On The Final Floor)Although It Is Easier To Get Him In Waterfall Pond
There are tons of keys in that dungeon with Mewtwo in it, or you can always buy 'em(They're 8000 Poke in the Kecleon shop)
No, Pokemon Mystery Dungeon: Red Rescue Team is only for Nintendo Gameboy Advance.
You cant, I dont think you can even do that with AR.