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Gran Turismo HD Concept

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Title Screen

Gran Turismo HD Concept

Developer: Polyphony Digital
Publisher: Sony Computer Entertainment
Platform: PlayStation 3
Released in JP: December 27, 2006
Released in US: December 27, 2006
Released in EU: March 23, 2007

AreasIcon.png This game has unused areas.
MusicIcon.png This game has unused music.
TextIcon.png This game has unused text.
DebugIcon.png This game has debugging material.

To do:
  • Document the old concept (HD Premium and HD Classic) stuff, plus things like the demo with motorcycles and premium Subaru Impreza Rally Car '99 to prerelease section.
  • Check if any unused tracks exist.

Gran Turismo HD Concept was once part of a much bigger project, but nowadays, it's known by many fans as the closest thing they're ever going to get of a playable high-definition version of Gran Turismo 4.

Almost all of this title's assets were carried forth into Gran Turismo 5 Prologue.

Gran Turismo HD E3 2006 Background

The well-known background picture of Gran Turismo HD, showing a Ford GT '05 and Honda CBR600RR (JP) '05 inside an opened garage, is still present inside the game's files.

GTHD2006 background.png

Unused Cameras

In Gran Turismo HD, only two cameras are used by the game: bumper (value 00) and chase (value 01). Like other Gran Turismo games, there are some unused cameras there as well, including a working cockpit cam.

Value (HEX) Name Description In-game Picture
00 DRIVER Bumper Cam (used) GTHD cam00.png
01 CHASE Chase Cam (used) GTHD cam01.png
02 -Missing- -Unknown- GTHD cam02.png
03 MIRROR_L Left Mirror GTHD cam03.png
04 MIRROR_R Right Mirror GTHD cam04.png
05 NOSE Car's "nose" GTHD cam05.png
06 BONNET Bonnet (used) GTHD cam06.png
07 ROOF Roof - Used in replay only GTHD cam07.png
08 BACK Roof rear view - Used in replay only when pressing L1 (look back) GTHD cam08.png
09 TAIL Car's "tail" GTHD cam09.png
0A SIDE_L Car's interior, left side GTHD cam0a.png
0B SIDE_R Car's interior, right side GTHD cam0b.png
0C FENDER_L Left fender -missing- GTHD cam02.png
0D FENDER_R Right fender -missing- GTHD cam02.png
0E WHEEL_FL Front-left wheel GTHD cam0e.png
0F WHEEL_FR Front-right wheel GTHD cam0f.png
10 WHEEL_RL Rear-left wheel GTHD cam10.png
11 WHEEL_RR Rear-right wheel GTHD cam11.png
12 OPTION_1 Rear (changes from car to car) GTHD cam12.png
13 OPTION_2 Front (changes from car to car) GTHD cam13.png
14 CHASE3 Chase cam 3 - Used in replay only GTHD cam14.png
15 CHAR1 -Unknown- GTHD cam02.png
16 CHAR2 -Unknown- GTHD cam02.png
17 CHAR3 -Unknown- GTHD cam02.png
18 CHAR4 -Unknown- GTHD cam02.png
19 DRIVER2 Centered "shaky" cockpit camera GTHD cam19.png
1A INCAR Cockpit cam - Steering wheel rotates more than 180° degree GTHD cam1A.png
1B -Missing- -Unknown- Cam is stuck underground GTHD cam1B.png

Special Settings

Many people thought that the "Secret code" from Gran Turismo 5 Prologue that was discovered in 2010 originated from that title, but seeing as this is the earliest build of Gran Turismo on the PS3 that was publicly released, and with all other future builds branching from this one, that code actually originates as far back as this game here.

The input required is the same as the title above, except with the addition of holding down two other buttons. To access the Special Settings menu, go to the game's Options, scroll down to the Misc menu in the Miscellaneous category, and while holding down L1, L2, R1, and R2, input Down, Right, Right, Down, Right, Right, Down, Right, Right, Down, Right, Right, START and the Special Settings menu should now appear in the Miscellaneous category.


Function Overview

Below is a list of all functions that the menu contains and a brief description on what they do. Given the available options, this menu was most likely intended for public kiosks and events.

  • Unlock All - Exactly as it says on the tin, pressing the big shiny Execute button will unlock all cars available in the game.
  • Save Full Lap Replay - Unsure about this setting's function, as saving a replay in-game will only save the best lap instead of the entire session anyway, but setting this option to Yes will not register the best lap time into the rankings when the player quits the race.
  • Special Guest - Setting to Yes will allow you to edit the next option.
  • Guest Name - A text entry box that only becomes available when the above option is set to Yes. Attempting to input anything will just bounce the cursor to the next option, pressing the start button in that box will cause the game to crash, requiring a console reboot.
  • Time Limit - Sets the time limit of gameplay in 10-second increments, all the way up to 3600 seconds.
  • System Language - Might have been used for the PAL territories version to change the language of the game, as only the game region's language is available to select from.

Unused Cars

There exists name-only entries for the Subaru IMPREZA Sedan WRX STI spec C Type RA '05, a car which would later appear in Gran Turismo 5: Prologue. What's interesting to note is that there's an entry for a tuned variant, in which such a model never appeared in the aforementioned title.

Internal Name Label
impreza_wrx_sti_c_ra_05 Subaru IMPREZA Sedan WRX STI spec C Type RA '05
impreza_wrx_sti_c_ra_05_tune Subaru IMPREZA Sedan WRX STI spec C Type RA '05 /T


GTHD xanavi nismo z 06 00.png

There's an unused thumbnail image of the Nissan XANAVI NISMO Z '06 still present in the game's files. Footage exists of the car being driven from an unknown (if identical from the regular HD Concept) build.

Unused Audio


There are multiple short themes that, judging by the filenames, were supposed to play when the player finishes or completes a race, a feature which ended up becoming part of Gran Turismo 5 in which a multitude of themes would play depending on the position the player finished the race in. These four themes went unused in the game and remain within the data files.

Source Filename Audio