Pokémon Mystery Dungeon: Blue Rescue Team and Red Rescue Team/Items

Gummis
Gummis are a new aspect of these games. They raise your IQs, but raise more IQ to those of its "type".

TMs
All the 50 TMs & the 8 HMs from Ruby, Sapphire, Leaf Green, Fire Red & Emerald are in this game, plus two new Machines unique to the game:

TMs can be restored using the move Recycle. HMs never break but cannot be used in a dungeon.