The Expansion Pak is a memory expansion that plugs into the N64 console’s memory expansion port in the place of the Jumper Pak. It is a system upgrade for the Nintendo 64 that doubles the console’s RAM storage capacity to 8 MB. The add-on was released in 1999 and contains 4 MB RDRAM, the same type of memory used inside the console itself. The Expansion Pak is installed in a port on top of the Nintendo 64 and replaces the pre-installed Jumper Pak.

Games that are enhanced but not required to play with expansion pak are:

Aidyn Chronicles: The First Mage
Gauntlet Legends
Hybrid Heaven
Pokémon Stadium 2
Resident Evil 2
Road Rash 64
Shadow Man
Star Wars: Episode I Racer
Turok 2: Seeds Of Evil
San Francisco Rush 2049
South Park

Games that require the Expansion pak to play are:

Donkey Kong 64
Single-Player Mode Of Perfect Dark
Multiplayer Mode Of Starcraft 64
The Legend Of Zelda: Majora’s Mask

Compatibility: 

all Nintendo 64 consoles from any region - PAL Australia, UK & NTSC USA, Japan