The following are known GameShark Codes for Heart of Darkness on Sony Playstation (PS1).

These codes were also known as Action Replay Codes outside the U.S. and later in the U.S. and are compatible with both devices.

• Almost Invulnerable
  800885CA C000
• Player 1 Open All Levels & Level Modifiers
  800A02BA 0???
• Player 1 Open All Cinematics
  800A02BC FFFF
  800A02BE FFFF
• Player 2 Open All Levels & Level Modifiers
  800A02DE 0???
• Player 2 Open All Cinematics
  800A02E0 FFFF
  800A02E2 FFFF
• Player 3 Open All Levels & Level Modifiers
  800A0302 0???
• Player 3 Open All Cinematics
  800A0304 FFFF
  800A0306 FFFF
• Player 4 Open All Levels & Level Modifiers
  800A0326 0???
• Player 4 Open All Cinematics
  800A0328 FFFF
  800A032A FFFF

Level Modifiers

• 000 – Level 1 / Screen 1
• 100 – Level 1 / Screen 2
• 200 – Level 1 / Screen 3
• 300 – Level 1 / Screen 4
• 400 – Level 1 / Screen 5
• 500 – Level 1 / Screen 6
• 600 – Level 1 / Screen 7
• 700 – Level 1 / Screen 8
• 800 – Level 1 / Screen 9
• 900 – Level 1 / Screen 10
• A00 – Level 1 / Screen 11
• B00 – Level 1 / Screen 12
• C00 – Level 1 / Screen 13
• D00 – Level 1 / Screen 14
• E00 – Level 1 / Screen 15
• 001 – Level 2 / Screen 1
• 101 – Level 2 / Screen 2
• 201 – Level 2 / Screen 3
• 301 – Level 2 / Screen 4
• 401 – Level 2 / Screen 5
• 501 – Level 2 / Screen 6
• 601 – Level 2 / Screen 7
• 701 – Level 2 / Screen 8
• 801 – Level 2 / Screen 9
• 901 – Level 2 / Screen 10
• A01 – Level 2 / Screen 11
• B01 – Level 2 / Screen 12
• C01 – Level 2 / Screen 13
• D01 – Level 2 / Screen 14
• E01 – Level 2 / Screen 15
• 002 – Level 3 / Screen 1
• 102 – Level 3 / Screen 2
• 202 – Level 3 / Screen 3
• 302 – Level 3 / Screen 4
• 402 – Level 3 / Screen 5
• 502 – Level 3 / Screen 6
• 602 – Level 3 / Screen 7
• 702 – Level 3 / Screen 8
• 802 – Level 3 / Screen 9
• 902 – Level 3 / Screen 10
• A02 – Level 3 / Screen 11
• B02 – Level 3 / Screen 12
• C02 – Level 3 / Screen 13
• D02 – Level 3 / Screen 14
• E02 – Level 3 / Screen 15
• 003 – Level 4 / Screen 1
• 103 – Level 4 / Screen 2
• 203 – Level 4 / Screen 3
• 303 – Level 4 / Screen 4
• 403 – Level 4 / Screen 5
• 503 – Level 4 / Screen 6
• 603 – Level 4 / Screen 7
• 703 – Level 4 / Screen 8
• 803 – Level 4 / Screen 9
• 903 – Level 4 / Screen 10
• A03 – Level 4 / Screen 11
• B03 – Level 4 / Screen 12
• C03 – Level 4 / Screen 13
• D03 – Level 4 / Screen 14
• E03 – Level 4 / Screen 15
• 004 – Level 5 / Screen 1
• 104 – Level 5 / Screen 2
• 204 – Level 5 / Screen 3
• 304 – Level 5 / Screen 4
• 404 – Level 5 / Screen 5
• 504 – Level 5 / Screen 6
• 604 – Level 5 / Screen 7
• 704 – Level 5 / Screen 8
• 804 – Level 5 / Screen 9
• 904 – Level 5 / Screen 10
• A04 – Level 5 / Screen 11
• B04 – Level 5 / Screen 12
• C04 – Level 5 / Screen 13
• D04 – Level 5 / Screen 14
• E04 – Level 5 / Screen 15
• 005 – Level 6 / Screen 1
• 105 – Level 6 / Screen 2
• 205 – Level 6 / Screen 3
• 305 – Level 6 / Screen 4
• 405 – Level 6 / Screen 5
• 505 – Level 6 / Screen 6
• 605 – Level 6 / Screen 7
• 705 – Level 6 / Screen 8
• 805 – Level 6 / Screen 9
• 905 – Level 6 / Screen 10
• A05 – Level 6 / Screen 11
• B05 – Level 6 / Screen 12
• C05 – Level 6 / Screen 13
• D05 – Level 6 / Screen 14
• E05 – Level 6 / Screen 15
• 006 – Level 7 / Screen 1
• 106 – Level 7 / Screen 2
• 206 – Level 7 / Screen 3
• 306 – Level 7 / Screen 4
• 406 – Level 7 / Screen 5
• 506 – Level 7 / Screen 6
• 606 – Level 7 / Screen 7
• 706 – Level 7 / Screen 8
• 806 – Level 7 / Screen 9
• 906 – Level 7 / Screen 10
• A06 – Level 7 / Screen 11
• B06 – Level 7 / Screen 12
• C06 – Level 7 / Screen 13
• D06 – Level 7 / Screen 14
• E06 – Level 7 / Screen 15
• 007 – Level 8 / Screen 1
• 107 – Level 8 / Screen 2
• 207 – Level 8 / Screen 3
• 307 – Level 8 / Screen 4
• 407 – Level 8 / Screen 5
• 507 – Level 8 / Screen 6
• 607 – Level 8 / Screen 7
• 707 – Level 8 / Screen 8
• 807 – Level 8 / Screen 9
• 907 – Level 8 / Screen 10
• A07 – Level 8 / Screen 11
• B07 – Level 8 / Screen 12