While the file format ensures technical stability, the "U" (USA) version of the game itself includes specific regional features:
The Japanese version contains parodies of real-world brands like "Marioro" (Marlboro) and "Luigip" (Agip). These were changed to generic "Mario Star" and "Luigi’s" in the (U) version to avoid licensing issues in the West. 2. The Format Battle: .z64 vs .v64 vs .n64 mario kart 64 u z64 better