Hydro Thunder Codes -

Hidden track:
Enter the options screen, highlight "Back", then press Up(2), Down, Up, Down(2), Start.

Hint: Hydro Jump:
Make sure you have boost, then hold X + R1, release X, and press Square while continuing to hold R1. If done correctly, your boat will fly into the air.

Hint: Mega Hydro Jump:
You must have plenty of boost. Press R1 + X + Square, release X and you will do the Hydro Jump. Continue to do this and you will be bouncing, or skipping through the water. This is especially useful in the Nile Adventure track when in the room with the floating 9 second boost.

Super start:
Hold X immediately after the announcer says "one" at the start of the race. In about three seconds a voice should say "Super Start". This allows you to go faster from the start and usually takes you to about 13th place immediately.

Hint: The only way to complete Venice Canals:
The following steps will help you complete Venice Canals, the hardest level (next to Nile Adventure) in the game in the only way possible. First, you must get a large amount of boost. A fast boat like the RaD HaZarD is recommended, if your good at turning. You must use your hydro jump to jump onto and over grass. This will get you ahead of a few racers. Then, you will reach a room with swinging chandeliers You have to hydro jump at just the right moment on the second chandeliers (there are a total of three). You will get a 9 second boost. Use it wisely to win and complete the level.

Hint: Venice Canals secrets:
A house will appear when you are going down the straightway before the sharp turn (where there is a bridge). Do a Hydro Jump, and if you are in eight place or less, you will end up in first place for the time being.

There is a bridge after you see the red boost in the hole that is up high. If you go to the far right, you will go under the bridge and see a bonus. If done correctly the announcer will say that you have found a secret.

Hint: The only way to complete Nile Adventure:
The following steps will help you complete Nile Adventure, the hardest level in the game in the only way possible. Go into the room where you can use the "Mega Hydro Jump" trick and get all the boosts. There are about four or, so including a 9 second boost. Some of the boosts are hidden, and require some practice. Recommended boats for this track are The Chumdinger, and the boat with the Fisherman, the Dog, and the huge booster. Use all the shortcuts, jump up onto the top of the track in the beginning of the race, and the near the end, bust through the sarcophagus.

Hint: Recommended boats:
The following is a list of the best boats to use on the easy and medium tracks.

Thunder Park track: Damn the Torpedoes
Lost Island track: Midway
Arctic Circle track: Damn the Torpedoes
Greek Isles track: Midway
Lake Powell track: Thresher
The Far East track: Thresher or Midway

The best boat in the game aside from the bonus boats is the Damn The Torpedoes. It will go faster and you will pass more people.

Turbovec and VegetaSS64

Glitch: Multiple boat name announcements:
Choose your boat and press X at the boat selection screen. The announcer will say your boat's name three times. Note: This does not work in two player mode.

Glitch: Nile Adventure:
Enter the room with the sarcophaguses. In the one where you bust through to go in the short-cut, you can get rammed up against the wall near it and will be flying up it. Keep pressing Accelerate to make multiple copies of your current boat appear.

Glitch: Hydro Skip:
Unlock the Chumdinger and N.Y. Disaster boats. Enabling the "Unlimited boost" GameShark code is also recommended. Go the part where the Coast Guard chases you around the "asteroid". Enter the tunnel and take the left path. When you reach the part where you fall down a hole, Hydro Jump and crash into the subway. Your boat will jump around and spin until you get out (by going in reverse).