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  • At some point near the end of the game, you are presented with a computer that has a GUI with a few icons and a toilet and you must flush a malicious program (remember - we're in 1990 where GUIs on PCs were not that common yet). There was an icon labeled SQ4: if you dragged it in the toilet, the game ended without warning and dropped you abruptly to the DOS prompt.
  • As with most adventure games of its time, this one used more floppies than ever. No wonder the authors thought of this joke: You could go inside the "Radio Shock" store and see in the bargain bin a copy of "King's Quest 48 , The quest for disk space" (or whatever sequel number it was).

Mark Crowe

Mark Crowe, one of the Space Quest series original designers, has stated that Space Quest IV is the game in the series that he considers his 'tour-de-force'. He worked on Space Quests 1-5.

Radio Shock controversy

After complaints from a certain widespread electronics chain, the name of the store "Radio Shock" in the Galaxy Galleria was changed to "Htz So Good" for the CD-ROM version.

References: Software store

The games at the software store are all parodies of other games. Here's a list of the parodied games:

References: Space Quest series

  • There's a secret time code in the game that takes you to Ortega (SQ3). It's simple: type in the top row left to right, then type in the leftmost symbol in the second row. There are also persistant rumors that there's a code for Space Quest II, but it's never been found.
  • If you smell the back of Droids-B-Us at Ulence Flats, the game says: "Smells like another lawsuit coming back to haunt the Two Guys from Andromeda". The reason?? Scott Murphy and Mark Crowe got sued by Toys-R-Us for putting Droids-B-Us in Space Quest.

References: Sierra games

  • Cedric, the owl from King's Quest V has an appearance in the Ms. Astro Chicken game at the Galaxy Galleria's Arcade.
  • In the Control room of the SuperComputer, two programs immediately come to mind: King's Quest and Leisure Suit Larry.
  • When you're in the pterodactyl's nest on Estros, you can see something streak across the sky. This is in fact King Graham being carried by a condor (from King's Quest).
  • The Quest for Glory theme music is occasionally played in the Software Store at the Galaxy Galleria, made out to sound like a PC internal speaker.

References: Various

  • At the Big and Tall store at the Galaxy Galleria, you can occasionally spot a guy rummaging around, occasionally pulling out a pair of red shorts. This is Bob Andrews, former Sierra OnLine programmer.
  • Luke Skywalker's little red speeder is disguised as the crashed hovercraft on the Xenon streets.
  • The trash can in the Galleria's Arcade is one of the agents from Get Smart.
  • During your visit to Ulence Flats, the Blues Brothers appear on stage at the bar, since they also appear in SQ1.
  • The robots in the SuperComputer are the Imperial ProBots from the Star Wars movies.
  • When you first visit the Software Store at the Galaxy Galleria, the bouncer will tell you that the Two Geeks From Andromeda are in there, signing copies of their latest release.


The DOS version of Space Quest IV was available in four different packages: a 16 color version (supporting EGA, MCGA, VGA, Tandy/PCjr) with either 3.5" DD or 5.25" HD disks, and a 256 color version (supporting MCGA, VGA) with either 3.5" HD disks or 5.25" HD disks.

Roger Wilco

From this entry on in the series, 'Roger Wilco' was included in the title of each game (actually in a bigger font than the actual 'Space Quest' bit), as by this time the character had grown and become as well-identified as the actual 'Space Quest' title by gamers (rather like Lara Croft in the Tomb Raider series).

Also this is the only game in the series in which there is neither access to a janitorial closet, nor a single conventional cleaning implement among the inventory items. Clearly, Crowe and Murphy intended Roger Wilco's adventures to continue without any occupational restrictions on the character.

Timed events

Certain sections of the game use an event timer that relies on your system clock. (even though the game speed itself adjusts according to the processor) This makes it virtually impossible to even begin the game on a modern machine - the mutant in the first section appears every few seconds, killing you instantly.

Version differences

The dialogue for the DOS and Amiga versions are identical, except for the part where one of the monochrome boys speak to you, where what he says will depend on the number of colors used in the game.

    EGA version:
  • "Well, lookee here! If it ain't Mister Look-at-me-I'm-in-EGA"
  • "Whatsamatter, monochrome not good enough for you?"
  • "What's this, 16 colors all for one little bitmapped WIMP?! What a waste of EGA. Har, har!"
  • "Hey, fellas! I bet I can toss him all the way-out from the bottom of the stairs. Bet 'ya an ale."

    VGA version:
  • "Well, lookee here! If it ain't Mister Look-at-me-I'm-in-VGA"
  • "Whatsamatter, monochrome not good enough for you?"
  • "What's this, 256 colors all for one little bitmapped WIMP?! What a waste of VGA. Har, har!"
  • "Hey, fellas! I bet I can toss him all the way-out from the bottom of the stairs. Bet 'ya an ale."

  • "Well, lookee here! If it ain't Mister Look-at-me-I'm-in-32-Colors"
  • "Whatsamatter, monochrome not good enough for you?"
  • "What's this, 32 colors all for one little bitmapped WIMP?! What a waste of color. Har, har!"
  • "Hey, fellas! I bet I can toss him all the way-out from the bottom of the stairs. Bet 'ya an ale."

Voice acting

Aside from the narrator Gary Owens, all voices in the game are done by Sierra employees. Guy from Andromeda Scott Murphy even does the voice of Sludge Vohaul.


  • Computer Gaming World
    • November 1996 (15th anniversary issue) – Funniest Computer Game
  • Power Play
    • Issue 02/1992 – Best Graphics in 1991
    • Issue 02/1992 – Best Sound in 1991
Information also contributed by 6⅞ of Nine, Allan Chan, Anthony Bull, B14ck W01f, Jayson Firestorm, Olivier Masse, Servo, William Shawn McDonie and WizardX

Contributed by Nathan Kovner (55) on Jan 06, 2000. [revised by : Patrick Bregger (232962)]. -- edit trivia