In Pokémon Mystery Dungeon: Red Rescue Team and Blue Rescue Team, the Joyous Tower is simply a difficult bonus dungeon with no real goal at it's end. Joyous Tower does however contain many rare Pokemon specifically Chansey.
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joyous tower has 99 floors
You can obtain eevee in joyous tower on the 12th to 17th floor hope it helped! XD
the last level
eather plakia or giratina
It is in joyous tower.
Joyous Tower is automatically unlocked after clearing Pitfall Valley and obtaining the Blue Sky Meadow Friend Area from an optional mission.
you can find the starter Pokemon Bulbasaur Treeko and chickorita
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YYEESS(DA).Torchic is in Blue Pokemon mystery dungeon game.HE IS IN JOYOUS TOWER AND OTHER (99) floored dungeons (for now stay wth joyous tower