Enjoy your Nintendo 64! Retro-bit's Expansion Pack for the Nintendo 64(r), which fits into your console's expansion slot and allows you to enjoy classics like Donkey Kong (r)64, The Legend of Zelda : Majora's Mask or Perfect Dark(r). In addition, 4 MB of memory doubles your console’s graphics processing for all N64(r). Retro-bit is the best alternative to buying used. The Legend of Zelda®: Majora’s Mask and N64® classics will require this 4MB RAM. It doubles graphics processor power.