Some N64 titles affected by emulation problems that have not yet been fixed

Nintendo said that a notice has been posted on the Virtual Console, notifying players about the glitch, but up till this morning there was no such notice to be found.

The recent addition of Mario Kart 64 to the Wii's Virtual Console digital download store showed what could be a big flaw in future releases to the Nintendo 64 channel, as technical problems prevented the implementation of part of the game's save mechanism.

In Mario Kart 64, while the main game data can be saved, the ghost rider feature, which allows players to essentially race against previous versions of themselves, has been scrapped, after it was deemed impossible to replicate on the built-in emulator on the Wii.

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Via Tom's Hardware