Release Group: Amiga
1994 - Release: King's Quest VI: Heir Today, Gone Tomorrow (United Kingdom)
1994 - Release: King's Quest VI: Heute Geerbt und Morgen Verschwunden (Germany)
Release Group: DOS
1992 - Release: King's Quest VI: Heir Today, Gone Tomorrow (United States)
1992 - Release: King's Quest VI: Heir Today, Gone Tomorrow (United Kingdom / 3.5" Disk release)
1992 - Release: King's Quest VI: Heir Today, Gone Tomorrow (United States / Upgrade version)
1992 - Release: King's Quest VI: Heir Today, Gone Tomorrow (Spain / CD-ROM version)
1992 - Release: King's Quest VI: Heir Today, Gone Tomorrow (Spain / 3.5" Disk release)
1992 - Release: King's Quest VI: Heute Geerbt und Morgen Verschwunden (Germany)
1993 - Release: King's Quest VI: Heir Today, Gone Tomorrow (United States / CD-ROM release)
1995 - Release: King's Quest VI: Heir Today, Gone Tomorrow (United States / Slash CD-ROM release)
1990 - Release: King's Quest V: Absence Makes the Heart Go Yonder (United States / Family Edition)
2006 - Compilation Release: King's Quest Collection
1997 - Compilation Release: King's Quest: Collection Series
1996 - Compilation Release: The Roberta Williams Anthology
1994 - Compilation Release: King's Quest (Collector's Edition)
2010 - Compilation Release: King's Quest 4+5+6
Release Group: Macintosh
1993 - Release: King's Quest VI: Heir Today, Gone Tomorrow (United States)
Release Group: Windows 3.x
1993 - Release: King's Quest VI: Heir Today, Gone Tomorrow (United States / CD-ROM release)