Big Mountain Cheats
N64 | Submitted by sniperb16Mirror Stages
To get Mirror Stages you must beat the regular Stages 1-4 the after the credits a screen pops up and says now you can select the mirror stages by pressing Z. This works in Time Attack, 2 player, and Championship modes.
N64 | Submitted by sniperb16Hidden Characters
After beating the Mirror Track (stages 1-4)with Skier and Boarder, watch the credits and another screen will pop up that says you can select the hidden characters. the bear, robot, and the disco guy)
N64 | Submitted by DR.Dick FaceAll Levels
To get all level cheat code. First go to the screen where you choose you're level to board on then hold the top "L" button on top and hold on to it then you must press "z" button quickly and press the "top C button" then press c down then you should have the code....