King's Quest IV: The Perils of Rosella

King's Quest IV: The Perils of Rosella (DOS, 1988) has an open-source reimplementation, scummvm/scummvm, and 1 other public project, including a decompilation.

Data checked 2026-10-12 · unbaked registry

Projects

ScummVM - SCI enginecovers 62 games

ReimplementationC++ (ScummVM framework); engines/sci2,842 starspushed 2026-10-12GPL-3.0 licenserelease v2026.4.0

ScummVM main repository

Supported in ScummVM (see compatibility list). Titles: KQ4-6, SQ3-5, QfG1-3, PQ2-3, LSL2-6, Laura Bow 1-2, Conquests of Camelot/Longbow, Codename: Iceman, Gabriel Knight 1 ()

SCI-Decompilation-Archive/kq4covers 21 games

DecompSCI script decompiler output (SCI Companion); runs on ScummVM's SCI e…41 starspushed 2025-02-19no license

A collection of decompiled source code for Sierra's SCI games.

Decompiled game script source in folder 'kq4'.

What you need

You need your own copy of the game: these projects ship code only.

More on DOS

GameMethodYearStarsLast push

DOSDoomSource releaseMatching decomp+8199320k2026-10-12 DOSChex QuestSource release199620k2024-05-24 DOSCommand & Conquer: Red AlertSource releaseReimplementation+3199618k2026-10-11 DOSCommand & ConquerSource releaseReimplementation+2199518k2026-10-12 DOSTransport Tycoon DeluxeReimplementationDisassembly+119958.4k2026-10-12 DOSQuakeSource releaseMatching decomp+419966.1k2026-10-12 DOSSimCity 2000Static recompReimplementation+119935.3k2026-10-11 DOSHereticSource releaseReimplementation+119943.1k2026-10-12

Found via scummvm.org/compatibility/, wiki.scummvm.org/index.php/Engines, osgameclones.com/, EricOakford/SCI-Decompilation-Archive/tree/maste

GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.