King's Quest IV: The Perils of Rosella

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King's Quest IV: The Perils of Rosella
King's Quest IV: The Perils of Rosella cover
Sierra On-Line
Release dates
DOS September 1988
Windows (ScummVM) February 25, 2010[1]
King's Quest IV: The Perils of Rosella guide at StrategyWiki
King's Quest IV: The Perils of Rosella at Wikipedia
King's Quest
King's Quest: Quest for the Crown‎ 1984
King's Quest II: Romancing the Throne 1985
King's Quest III: To Heir Is Human 1986
King's Quest IV: The Perils of Rosella 1988
King's Quest V: Absence Makes the Heart Go Yonder! 1990
King's Quest VI: Heir Today, Gone Tomorrow 1992
King's Quest VII: The Princeless Bride 1994
King's Quest: Mask of Eternity 1998
The Silver Lining (unofficial) 2010
King's Quest (2015) 2015

Key points

The manual is required to pass the in-game copy protection (digital versions include it)
Most collections and re-releases include the SCI0 edition of the game
Both the AGI and SCI0 versions of the game can be run under ScummVM.

General information

Sierra Help Pages - King's Quest series
King's Quest Omnipedia - A huge wiki for the King's Quest series Community Discussions for game series Support Page
Steam Community Discussions for game series


Source DRM Notes Keys OS
Prompts for answers from manual, code wheel, etc.
Bundled with King's Quest V: Absence Makes the Heart Go Yonder! and King's Quest VI: Heir Today, Gone Tomorrow.
Pre-packaged with ScummVM
DOSBox version is also available (when using GOG Galaxy).[2]
Icon overlay.png
Comes bundled with all other King's Quest games (excluding King's Quest 8).

Version differences[edit]

Original releases[edit]

Versions 1.000.106 and 1.000.111 of the SCI0 release feature high-detail graphics, while versions 1.003.006 and later lack them for filesize reasons.[3]
The AGI version only supports single and three-channel PC Speaker audio, while the SCI0 version also supports AdLib and MT-32 audio.[4]
The AGI version has a resolution of 160x200, while the SCI0 version has a resolution of 200x320.[4]
The SCI0 version has color dithering support for increased image fidelity.[4]
The Amiga version of the game features exclusive environmental and incidental sound effects.[3]

Digital releases[edit]

The King's Quest Collection, the collection on Steam, is not properly configured for modern systems[5]

Essential improvements[edit]

Ultimate King's Quest 4 patch[edit]

Download patch here.

Combines the Amiga sound effects, SCI0 high-detail graphics, MT-32 audio (emulated using the Munt MT-32 emulator), and other features from the various releases into a single version run through DOSBox.
Requires the PC SCI0 version and ROM files from an authentic MT-32.
Links is no longer active and available.

Game data[edit]

Configuration file(s) location[edit]

System Location
Windows <path-to-game>\[Note 1]
Linux (Proton) <Steam-folder>/steamapps/compatdata/10100/pfx/[Note 2]

Save game data location[edit]

System Location
Windows <path-to-game>\KQ4SG.***[Note 1]
Linux (Proton) <Steam-folder>/steamapps/compatdata/10100/pfx/[Note 2]
These are the default paths used by the game. The save file location can be determined by the user
For the re-release, the C:\ drive is mapped to <path-to-game>

Save game cloud syncing[edit]

System Native Notes
GOG Galaxy
Steam Cloud

Video settings[edit]

Graphics settings ( version)
Graphics settings ( version)

Input settings[edit]

Audio settings[edit]

Audio feature State Notes
Separate volume controls
Surround sound
All speech is text-based.
Closed captions
Mute on focus lost


Language UI Audio Sub Notes

Other information[edit]


Technical specs Supported Notes
DOS video modes CGA, CGA Composite, EGA, Hercules, MCGA, Tandy, PCjr, VGA CGA Composite is only available using the AGI version.
64-bit executable
Requires a 64-bit build of ScummVM.

System requirements[edit]

Operating system (OS) 5.0
Processor (CPU) Intel 286
System memory (RAM) 512 KB
Hard disk drive (HDD) 4 MB
Video card (GPU) CGA, EGA, Hercules, MCGA, Tandy 16-color, PCjr 16-color, VGA
Minimum Recommended
Operating system (OS) XP, Vista
Processor (CPU) 1.0 GHz
System memory (RAM) 256 MB
Hard disk drive (HDD) 300 MB
Video card (GPU) DirectX 7 compatible


  1. 1.0 1.1 When running this game without Administrator elevation, activity in %PROGRAMFILES%, %PROGRAMFILES(X86)%, and %WINDIR% might be redirected to %LOCALAPPDATA%\VirtualStore\ (more details).
  2. 2.0 2.1 File/folder structure within this directory reflects the path(s) listed for Windows and/or Steam game data (use Wine regedit to access Windows registry paths). Games with Steam Cloud support may store data in ~/.steam/steam/userdata/<user-id>/10100/ in addition to or instead of this directory. The app ID (10100) may differ in some cases. Treat backslashes as forward slashes. See the glossary page for details.