Monster Truck Madness 64

Low rider trucks:
Enter YRDR as a password.
Information in this section was contributed by Jordan Brown and Wake809.

Full time missiles:
Enter Y_WNT_T as a password to have unlimited missiles. Note: "_" indicates a space. To use the missiles, press Left during game play.
Information in this section was contributed by Jordan Brown and Adam Sliger.

Gut bomb:
Enter BRPS as a password.

Turbo mode:
Enter CFFNYN as a password.
Information in this section was contributed by key41.

Programmer images:
Enter JMPNG as a password to place a picture of one of the game's programmers on various surfaces.

Weird textures:
Enter JMPR as a password. Select "Done" and "JIM" will appear in the square. Press Start, select "New Game", then choose "Summit Rumble". Select any number of players, but many CPU trucks. When game play begins, the background will be black and white, black squares with aliens or other objects in the middle will appear, and someone's picture will appear on the ground.
Information in this section was contributed by Mark Hagar, Brett Hudson, mhankins, thetcups, Thomas Oldham, and ccornman.

Jet-pack power-up:
Hold L + R + C-Left + C-Right + C-Up + C-Down then press Start at the main menu to begin a level.

All levels:
To access all levels for time trial or custom race, unlock the Death Trap track then press B at truck selection screen. Start your own race or time trial under the expert difficulty setting and all tracks can be accessed.
Information in this section was contributed by Patpride57.

Aztec Valley track:
Successfully complete a circuit under the easy difficulty setting.
Information in this section was contributed by Spike22A.

Alpine Challenge track:
Successfully complete a circuit under the medium difficulty setting.
Information in this section was contributed by Spike22A.

Death Trap track:
Successfully complete a circuit under the hard difficulty setting.
Information in this section was contributed by Spike22A.

Horn:
Press Down to use the horn. Note: There are many different type of horns that are randomly assigned at the beginning of a race.
Information in this section was contributed by Spike22A.

Sound effects:
Press Up to hear "Yahoos", burps, and farts.
Information in this section was contributed by Spike22A and Anakin1wal.

Information in this section was contributed by Spike22A.

Hint: Runes hiding places:
Go to the corner of the second highest level of the gray tower. There is a hole on the side near the Hover that can be used to hide in. If two monster trucks are placed in the hole, one will go flying out. Drive on the road where Nitro and Hover are located. A small building will come into view after the jump. Use Hover or Diamond Invisibility to enter the building.
Information in this section was contributed by Jerm.

Hint: Crushed truck:
Get the shrinker missile. Shrink your opponents, then crash into them. When they become large again they will be crushed. Note: They trucks will only be crushed for a short period of time. They will slowly regain their original size.
Information in this section was contributed by Spike22A.

Hint: No shocks:
Enable the "Low rider trucks" code and begin game play in two player mode. Collect a shrinker missile, then shoot it at the other player's truck. That truck will appear to be only body and wheels.
Information in this section was contributed by Vols.

Hint: Wheelie on front of truck:
Enable the "Turbo mode" code. Start a new game, go to exhibition and pick "Beginner". Select any truck. Go to the Junkyard level and get the hover item. Use it at the top of a hill and quickly fly over the black wall. Once you are clear of the wall, stop until the hover wears out. Then, slowly drive into the wall (it will not break). When the front of your truck is touching the wall, accelerate. When the words "Hang On" appear, quickly hold Analog-stick Down. You will then begin to fly back in the air. Keep Analog-stick Down held to land on the front of the truck then hold B (brake). If done correctly, you will then stay on the front of the truck while sliding backwards.
Information in this section was contributed by ChromeDome84.

Hint: Wheelie on back wheels:
Select the Scrap Yard race. Go to checkpoint 4 and plow through the breakable part of the fence. Then, backup to the unbreakable part of the fence. Keep holding the Analog-stick Back and when you get "Hang on" message, you will launch. When you fall from the air (keep Analog-stick Back the entire time), hold B two seconds before you land. Hold Analog-stick back + B and you should do a wheelie.
Information in this section was contributed by Ice catcher.

Glitch: Big tires when hovering:
Note: Two players are required to perform this trick. Have player one get the hover power-up and player two get the shrinker missile. Then, have player one use the hover and begin to fly. While player one is in the air, have player two use the shrinker. The truck will shrink but the tires will remain the same size.
Information in this section was contributed by Spike22A.

Glitch: Get stuck in last place:
Select any truck and start the Voodoo Island track with more than one player. Between the start/finish line and the last checkpoint is a large jump. Skip the jump and go around on the track already you went on. The game will state that you are in last place for the rest of the race.
Information in this section was contributed by Leland De Groot.