More effective spears and bones:

Spears and bones are more effective when lit on fire.

Cheat mode:
Hold L + R and press Down, X, Up, Y, Down(2), Up(2) at the main menu. Release L + R and a "Cheat" option will appear at the main menu. Select the "Cheat" option:

Bonuses completed:
Enter KKmuseum as a code.

Unlimited spears:
Enter lance 1nf as a code. Note: This code includes the number "1" in the second word.

Machine gun:
Enter KKcapone as a code.

Revolver:
Enter KKtigun as a code.

God mode:
Enter 8wonder as a code.

Level select:
Enter KKst0ry as a code. Note: This code includes the number "0".

One-hit kills:
Enter GrosBras as a code.

999 ammunition:
Enter KK 999 mun as a code.

Shotgun:
Enter KKsh0tgun as a code. Note: This code includes the number "0".

Sniper rifle:
Enter KKsn1per as a code. Note: This code includes the number "1".

More effective spears and bones:
Spears and bones are more effective when lit on fire.

Artwork gallery:
Successfully complete the game.

Weta Artworks: Environments Part 1:
Get a 5% game completion.

Weta Artworks: Environments Part 2:
Get a 25% game completion and obtain the correct online code for your particular game at http://www.kingkonggame.com/.

Weta Artworks: Environments Part 3:
Have at least 50,000 points and a 100% game completion.

Weta Artworks: Creatures:
Get a 50% game completion.

Weta Artworks: Kong Part 1:
Get a 75% game completion.

Weta Artworks: Kong Part 2:
Have at least 20,000 points and a 100% game completion.

Weta Artworks: Kong Part 3:
Have at least 100,000 points and a 100% game completion.

Weta Artworks: Kong Part 4:
Have at least 150,000 points and a 100% game completion.

Old movie filter option:
Get a 15% game completion.

High contrast filter option:
Get a 100% game completion.

Horizontal flip option:
Get a 100% game completion and obtain the correct online code for your particular game at http://www.kingkonggame.com/.

Peter Jackson Interview:
Have at least 75,000 points and a 100% game completion.

Philippa Boyens interview:
Have at least 200,000 points, a 100% game completion, and obtain the correct online code for your particular game at http://www.kingkonggame.com/.

Save Kong alternate ending sequence:
Have at least 250,000 points and a 100% game completion.