Though the story remained largely the same, the N64 version had distinct visual and mechanical differences:
The gaming world lost its mind. Screenshots emerged of pre-rendered backgrounds, the new partner-zapping system, and a train called the Ecliptic Express. It looked moody, atmospheric, and impossibly advanced for the N64. Release date? Late 1999. i--- Download Rom Resident Evil Zero N64
: Interestingly, the "Partner Zapping" system was specifically designed for the N64 because its cartridge technology allowed for instant character switching Review: Resident Evil Zero for N64 - A
Watch footage of the unreleased prototype to see how the N64 version differed from the final GameCube release: Project64 Mupen64++ N64++