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Imperishable Night

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Imperishable Night
Imperishable Night cover
Team Shanghai Alice
Release dates
Windows August 15, 2004
Perspectives Top-down view
Genres Shooter
Vehicles Flight
Series Touhou Project
Imperishable Night guide on StrategyWiki
Imperishable Night on Wikipedia
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This game is only playable in English with a fan translation (see Localizations for details and other supported languages).

Touhou Eiyashou ~ Imperishable Night (東方永夜抄 ~ Imperishable Night) is a Vertical-Scrolling Shoot 'em up in the Touhou Project series of games. It is the 8th official game in the series. [1]

The game was released on August 15, 2004.

General information

Touhou wiki article for Imperishable Night
Official game website (Japanese)


Source DRM Notes Keys OS
A demo is available from the game's official website, marked under as "ver0.03" (updatable with "ver0.03->ver0.03a").

Essential improvements


Patches for the full game can be found in the link "・ダウンロード(体験版、アップデートパッチ) 04/08/19 更新" (Download (trial version, update patch) 04/08/19 update) then "ダウンロード (04/08/19 更新)" (Download (Updated on 04/08/19)) from the game's official website. Depending on your version (1.00d being the latest), download "ver1.00->ver1.00a" to upgrade from 1.00 to 1.00a, "ver1.00a->ver1.00d" to upgrade from 1.00a to 1.00d, "ver1.00b->ver1.00d" to upgrade from 1.00b to 1.00d and use "ver1.00->ver1.00a" with "ver1.00a->ver1.00d" if you have 1.00c.

BGM Patch

Fixes playback glitches with the game's BGM files.

Game data

Configuration file(s) location

System Location
Windows <path-to-game>\th08.cfg[Note 1]

Save game data location

System Location
Windows <path-to-game>\score.dat[Note 1]
<path-to-game>\replay\[Note 1]
<path-to-game>\snapshot\[Note 1]




Audio feature State Notes
Separate volume controls
Surround sound
No dialog outside text.
Closed captions
Mute on focus lost
General MIDI audio
See MIDI Option with Sound Canvas VA for accurate playback.

MIDI Option with Sound Canvas VA

The game's MIDI option was intended to be used with a Roland SC-88 Pro. Alternatively, an officially released software synth called Sound Canvas VA can be used, which emulates all four Sound Canvas modules, including the SC-88 Pro
  1. Download SAVIHost.
  2. Place the SAVIHost EXE in C:\ProgramData\Roland Cloud\Sound Canvas VA, and rename it SOUND Canvas VA.exe.
  3. Install LoopMIDI and MIDIMapper
  4. Open LoopMIDI and the EXE you renamed.
  5. In SAVIHost, make sure to click "Options" and then "SYSTEM" in the Sound Canvas VA interface, and set the Map Mode to "SC-88Pro"
  6. Go to the Devices menu, and select "MIDI". Then set "Input Port 1" to "loopMIDI Port"
  7. Open MIDIMapper, and set the default MIDI device to "loopMIDI Port".


Unless Sound Canvas VA is registered, it will only play for 10 minutes before it stops playing. This can somewhat be alleviated by simply closing the SAVIHost window, and opening it again.


Language UI Audio Sub Notes
Fan translation
Fan translation
Fan translation
Fan translation

Issues fixed

DirectDraw problems from DirectX 8

Fixes multiple issues, like the Win10 full-screen error and DLL "Entry Point Not Found" error.

Download files[2]
  1. Download the ESB DX8 to DX9 converter.
  2. Extract files to the installation folder.
  3. Game should run as usual.
Alternatively could use Ultimate ASI Loader (which integrates Crosire's d3d8to9) by renaming dinput8.dll to d3d8.dll and adding the following to a global.ini file:

This allows other files that would modify d3d8.dll to be loaded by renaming their extension to '.asi'.

Other information


Technical specs Supported Notes
Direct3D 8
Executable 32-bit 64-bit Notes



Make's Youmu's ghost transparent when focused.
Overwrites d3d8.dll, thus interfering with DirectX 9 conversion unless the Ultimate ASI Loader is used.

No Hitbox DATs

Disables the showing of the player's hitbox whenever the Focus key (default Shift) is pressed like earlier games.

Real Hitbox Patches

Makes bullets' size more accurate to their hitboxes.

Touhou Ultra

Makes the game harder by making bullets faster and in larger quantities.

Touhou Vorbis Compressor

Can save up to 80% of the game's disk space by compressing the game's BGM music files into Ogg Vorbis with little if any effect on the quality.

System requirements

Operating system (OS) 98
Processor (CPU) 500 MHz
System memory (RAM) 64 MB
Hard disk drive (HDD) 530 MB
Video card (GPU) 16 MB of VRAM
DirectX 8 compatible


  1. 1.0 1.1 1.2 1.3 When running this game without elevated privileges (Run as administrator option), write operations against a location below %PROGRAMFILES%, %PROGRAMDATA%, or %WINDIR% might be redirected to %LOCALAPPDATA%\VirtualStore on Windows Vista and later (more details).


  1. Imperishable Night on Touhou Wiki - last accessed on 2023-12-28
  2. Touhou Wiki - Game Tools, Dx8 to Dx9 converter - last accessed on May 2023