Perhaps you are thinking of one of the following games:
* Pokémon Mystery Dungeon: Explorers of Sky: This game was released for Nintendo DS in 2009 and is a remake of Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness.
* Pokémon Mystery Dungeon: Gates to Infinity: This game was released for Nintendo 3DS in 2013.
If you have a different name in mind, please provide more details and I can try to help you find the correct game.