Ace Combat 04: Shattered Skies

Developer(s): Project Aces
Publisher(s): Namco (JP, US), SCEE (EU)
Genre: Simulation
Wikipedia: Link
Game review links: Metacritic89/100
Game description: During the course of the game, the player has the opportunity to purchase 21 different planes, from models that actually exist to prototypes or relatively new aircraft that were in development (at the time of game production) and their weaponry. Every plane has two alternate paint schemes, gained by achieving a superior, or S, ranking on a stage in normal difficulty mode, by shooting down the ace pilots on each stage, or by completing the challenge modes.

Ace Combat 04: Shattered Skies
Ace Combat 04 NTSC Cover
Game general and emulation properties:
CERO rating: A
ESRB rating: E (Mild Language, Violence)
Game supports harddrive
Widescreen supported natively
Widescreen patch available
GPU intensive game
CPU intensive game
Supports up to two local players
Languages supported:
English: SLUS-20152 & SCES-50410 & SLUS-20152GH
Japanese: SLPS-25052 & SLPS-73410 & SLPS-73205 & SLPM-60149
German: SCES-50410
French: SCES-50410
Spanish: SCES-50410
Italian: SCES-50410
Region NTSC-U:
Serial numbers: SLUS-20152
SLUS-20152GH (Greatest Hits)
Release date: November 1, 2001
October 23, 2004 (Greatest Hits)
CRCs: A32F7CD0
Windows Status: Playable
Linux Status: Playable
Mac Status: ?
Region PAL:
Serial numbers: SCES-50410
Release date: February 8, 2002
CRCs: 1B9B7563
Windows Status: Playable
Linux Status: ?
Mac Status: ?
Region NTSC-J/C/K:
Serial numbers: SLPS-25052
SLPS-73410 (PlayStation 2 the Best)
SLPS-73205 (PlayStation 2 The Best)
SLPM-60149 (Trial)
Release date: September 13, 2001
September 16, 2004 (PlayStation 2 the Best)
CRCs: D8D43E28
Windows Status: Playable
Linux Status: ?
Mac Status: ?

Winlogo.png Test configurations on Windows:

Environment Configurations Comments Tester
Region OS CPU/GPU Revision Graphics Sound/Pad
  • Intel Core i7 920 @ 4.0ghz
  • AMD Radeon HD 5770x2 (CrossfireX)
SVN r5051 GSDX D3D11 r5051 SPU2-X r5025 Needs powerful hardware just to go in-game. Needs investigation/optimization to make this game playable. ?
PAL Windows
  • Intel Core i5 2500 @ 3.1 gigahertz
  • Nvidia GeForce GTX 460 (driver 314.22 + GeForce Experience installed)
1.0.0 GSDX
  • SPU2-X
  • ?
Europe v02.00 (14/06/2004), None, SkipMPEG, - Game launched via a retail copy., - Heavily "garbled" textures in the in-game menus (plane/weapon selection, plane/weapon buying and selling screen) : most of the textures of those menus are hidden by formless black polygons covering a large part of the screen.
NTSC-U Windows
  • Intel Core i7 @ 3.4Ghz
  • Nvidia GTX 285 768MB
1.1.0 r5546 GSdx 5542 SSE41
  • SPU2-X 2.0.0
  • LilyPad 0.11.0
Runs near full speed.
PAL Windows 10 Pro 64 bit
  • Intel Core i7 4790K 4.70GHz
  • 2 x NVIDIA GeForce GTX 980 (SLI)
1.2.1 r5875 GSdx 0.1.16 (MSVC 18.00, AVX2) SPU2-X 2.0.0 r5822 Hardware mode has many graphical glitches. Software mode renders the game accurately, but requires a very powerful CPU.

I can maintain the target framerate of the PAL version (50fps) even with the view set to external. When using the NTSC-U (60fps) version, the framerate drops to 52 - 55fps, rendering the game sluggish and unplayable.

NTSC-J Windows
  • I5 3330
  • HD radeon 6850
1.3 Git 28 of May GSDX
  • SPU2-X
  • ?
USA v02.20(10/02/2006), Little Heavy,can requires MTVU hack., Status
PAL Windows
  • I5 3330
  • HD radeon 6850
1.3 Git 28 of May GSDX
  • SPU2-X
  • ?
USA v02.20(10/02/2006), Hard to believe....but Is fine now,not issues more., Status
NTSC-U Windows 7 Professional 64-bit
  • Intel Core i7 4770K @ 3.50GHz
  • NVIDIA GeForce GTX 770 (SLI x2)
1.3.0-20140912204128 GSdx 20140912204128 (MSVC 18.00, SSE41) 0.1.16 [GSdx32-SSE4]OpenGL SPU2-X 20140912204128 2.0.0 Hardware mode runs fast, but there are too many texture glitches to be enjoyable. Software mode works well, but requires a fast CPU and only Virtual Cockpit view works. SpeedySPCFan
PAL Windows 7 Professional 64-bit
  • Intel Core i5 @ 3.3GHz
  • AMD Radeon HD 6000
1.5.0-1230 Default Default Runs and looks great in software mode. Numerous graphical issues in hardware mode. Slowdown with OpenGL HW renderer due to unoptimized AMD OGL driver. FlatOut
NTSC-U Windows 10 Pro x64
  • Intel Celeron G1820 @ 2.70GHz
  • NVIDIA GeForce GTX 960 2GB
1.5.0 beta 2590 GSdx32-SSE4 1.1.0 SPU2-X 2.0.0 This is a VERY intensive game for both CPU and GPU. Even at native resolution, my GPU is maxed out and i get framerates like 52-58FPS. Also, I see vertical lines on the entire game, save for some cutscenes. Those are not very distracting. clorophilla
NTSC-U Windows 10 Home x64
  • AMD Ryzen 3 1300X @ 3.50 GHz
  • NVIDIA GeForce GTX 1060 @ 3GB
1.5.0 (dev-2613 g48d9763d2)
GSdx 1.1.0 AVX2
  • SPU2-X 2.0.0
  • LilyPad 0.11.0
Game story played through from start to end. Game runs at full speed at all times, with minor visual glitches (see Additional Information).
Spectra Twilight
PAL Windows 10 Pro x64
  • Intel Core i5 8600K @ 5.0GHz
  • NVIDIA RTX 2060 Super
v1.7.0-dev-109-g4102489d8 GSdx 20200629164148 (MSVC 19.21 AVX2/AVX2) 1.2.0 SPU2-X 20200629164148 2.0.0 Requires OpenGL Software mode. Runs full speed on 'Safe' emulator preset. No issues observed. Xevon
NTSC Windows 10 Pro x64
  • AMD Ryzen 2700X
  • NVIDIA RTX 1660ti
v1.7.0-dev-1641 OpenGL SPU2 Works great in OpenGL Hardware mode. Must use this fix. Cannot see Explosions, no known fix as of yet, but can upscale up to 2k. Gravity
NTSC-U Windows 8.1, 64-bit
  • Intel(R) Pentium(R) CPU G2030 @ 3.00GHz
  • NVIDIA GeForce GT 1030 @ 2 GB
v1.6.0 GSdx 20200506140834 (MSVC 19.25 SSE4.1/SSE41) 1.2.0
  • SPU2-X 20200506140834 2.0.0
  • LilyPad (20200506140834) 0.12.1
I downloaded this patch to remove the permanent black color of the plane. The game runs at 1080p 60 FPS with 65% brakes, for that without bugs and freezes. I tried 2X resolution and Native (PS2), anyway with the brakes the game runs on OpenGL (Hardware or Software) rendering. Chern40+7

Linlogo.png Test configurations on Linux:

Environment Configurations Comments Tester
Region OS CPU/GPU Revision Graphics Sound/Pad
NTSC-U Arch Linux
  • Intel Core i5 4570 @ 3.20GHz
  • NVIDIA GeForce GTX 770
PCSX2 1.4.0-0-compiled on Jan 9 2016 GSdx 1.0.0 OpenGL SPU2-X 2.0.0 SDL Runs stable in hardware mode. Has severe terrain texture glitches that worsen the longer played, and in game player plane renders completely black. Distracting, but playable as they only happen in the distance. Software mode does not experience such issues but is prone to slowdowns. actioninja
NTSC-U SteamOS Holo 3.3.1 (Steam Deck)
  • AMD Custom APU 0405 @ 2.8 GHz
  • AMD Custom GPU 0405 1 GB
1.7.3337-QT OpenGL (Hardware) Runs smoothly. Occasional audio stuttering, no effect on rendering performance. Known issues listed below all apply. Vulkan renderer has seemingly random micro stutters in rendering. SierraKomodo


  • Original names: エースコンバット04 シャッタードスカイ (SLPS-25052) & (SLPS-73410)
  • Also known as Ace Combat: Distant Thunder (EU)
  • HDD support is only available in the Japanese version.

Known Issues

Black Plane

  • Status: Active
  • Type: Minor
  • Description: In Hardware mode the player's plane texture appears completely black. NPCs and cockpit view are unaffected.
  • Workaround: Use build 1.5.0-dev-2329 along with the no-interlacing cheat codes for the game (requires NTSC-U version). This works on both D3D11 HW and OpenGL HW renderers; if using OpenGL, Auto Flush must be enabled. On newer builds (including 1.6 and 1.7) this is only a partial fix on D3D11, as the planes will still appear darker than they should and have a black jagged outline (white outline if Texture Filtering is set to Nearest), while having no effect on OpenGL.

Missing clouds

  • Status: Active
  • Type: Minor
  • Description: In Hardware mode clouds are invisible.
  • Workaround: Use software mode.

Software mode FPS drop in Third Person or Cockpit view

  • Status: Active
  • Type: Minor
  • Description: In Software Mode, both third person and cockpit views make the game go unplayably slow.
  • Workaround: Set the camera to Virtual Cockpit or use the AVX2 launcher.

Explosions not visible

  • Status: Active
  • Type: Minor
  • Description: Explosions on planes or ground items do not display in hardware mode, only the white puff of smoke arising from the explosion.
  • Workaround: Use software mode.

Fixed Issues

Broken terrain textures

  • Status: Fixed
  • Type: Serious
  • Description: In hardware mode mipmapping issues cause terrain textures to appear distorted and constantly changing form.
  • Workaround: This can be resolved with the latest v1.5.0 git builds. Go to Config > Video(GS) > Plugin Settings, and set Mipmapping to "Basic". For older versions use Software mode.

Flickering HUD

  • Status: Fixed
  • Type: Minor
  • Description: In Hardware mode, the HUD can be flickering, and completely disappears in some night missions
  • Workaround: Go to Config -> Video (GS) -> Plugin Settings, and make sure CRC Hack Level isn't set to "Aggressive".

Hangar area partially obscured

  • Status: Fixed
  • Type: Minor
  • Description: In Hardware mode a thick, dark gray mist covers the hangar area.
  • Workaround: This has been resolved in recent v1.5.0 git builds. For PCSX2 v1.4.0 and earlier Hardware Depth also needs to be enabled. Or use software renderer.

Vertical lines

  • Status: Fixed
  • Type: Minor
  • Description: Several vertical lines appear spread accross the screen in Hardware mode.
  • Workaround: Go to Config > Video(GS) > Plugin Settings, turn on "Enable HW Hacks", go to Configure Hacks, and enable the Align Sprite hack.

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