Nintendo 64 Cheats N64 Cheats | PSX Cheats | PSX 2 Cheats | PC Cheats | DC Cheats | Home New & Used N64 Games Dr. Mario 64 Toggle Computer Difficulty(VS Mode Only): Goto the Character section screen and hilight a character. Now while holding L press A for "HARD mode" or B for Super Hard Mode. More N64 Cheats