The original N64 version is highly praised for its unique multiplayer modes, which include "Beach" (snipers vs. refugees), "Raptor" (cavemen vs. dinosaurs), and "Heist".
Do not search for "Romsmania" or similar sites. Those files are often incomplete, infected with malware, or lack the Spanish patch. Here is how to play Conker in Spanish legally: Conker Bad Fur Day Rom Espanol N64 Romsmania -BETTER