Pokémon Mystery Dungeon comes in two versions, one on the GBA, one on the DS. However some of you are probably asking...whats the difference? The answer? Not a lot. However it does make use of the touch screen and both screens...Below are all the differences

The next difference is that all the menu's normally brought up by the Start Menu in the GBA version can be easily accessed via little icons at the bottom such as the Rescue Force's status like HitPoints and so forth
The dungeon map can also be transferred to the top screen and gives you the information for your team aswell
And finally, text previously displayed throughout the game is accessible such as experience gain and other bits of text so you can remember what your mission is