User review spotlight: Ultima IV: Quest of the Avatar (DOS)

Impossible Mission

MobyRank MobyScore
Amstrad CPC
Atari 7800
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You play a secret agent on a quest to stop the evil Professor Elvin Atombender, who is believed to be tampering with national security computers. You must penetrate Atombender's stronghold, avoid his deadly robot creations, and acquire various pieces of a password to use in the main control room.

The robots, rooms, and puzzle pieces will be switched around when starting over which provides replay value.


Impossible Mission Apple II Being told where to point in the "Simon" room
Impossible Mission BBC Micro Staring at the robot in front..
Impossible Mission SEGA Master System Using a computer terminal
Impossible Mission ZX Spectrum Running around the corridors

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User Reviews

Made before "they don't make em like they used to" became true Commodore 64 carl brennan (2)

The Press Says

Mean Machines SEGA Master System Oct, 1990 94 out of 100 94
Computer and Video Games (CVG) SEGA Master System Feb, 1991 93 out of 100 93
Retro Gamer Commodore 64 Apr, 2005 9 out of 10 90
ASM (Aktueller Software Markt) ZX Spectrum Feb, 1986 8.5 out of 10 85
Joystick (French) SEGA Master System Apr, 1991 80 out of 100 80
Digital Press - Classic Video Games Atari 7800 Dec 10, 2003 8 out of 10 80
Megablast Atari 7800 1992 74 out of 100 74
Video Games SEGA Master System Mar, 1991 70 out of 100 70
Computer Gamer Amstrad CPC Oct, 1986 10 out of 20 50
The Video Game Critic Atari 7800 Jul 27, 2012 D- 16


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Atari 7800 version

On the Atari 7800, the name of the game can be taken literally. Due to a bug in the program the NTSC release cannot not be completed. Some of the items you need are hidden under terminals that cannot be searched. This was fixed for the PAL release.

References to the game

The title of the German computer games podcast Stay Forever by former gaming journalists Christian Schmidt and Gunnar Lott is inspired by the synthesized speech "Stay a while...stay forever!" from this game. The voice is also used in the podcast's intro.


On the Commodore 64 version. The game is well known for the use of synthesized speech. Electronic Speech Synthesis (the company that developed the sampled speech for the game) used this game as a test sample.

When this sample was a successful game, Electronic Speech Synthesis (ESS) significantly raised their prices. This caused Epyx to never use their services again (although Impossible Mission II uses ESS, Novotrade developed the game, and they were the same sampled speech tracks used in this game).


  • ACE (Advanced Computer Entertainment)
    • February 1991 (issue #41) - Included in the list Greatest Games of all Time, section Platform-based Games (editorial staff choice)
  • Commodore Force
    • December 1993 (Issue 13) – #50 “Readers' Top 100”
  • FLUX
    • Issue #4 - #92 in the "Top 100 Video Games of All-Time" list
  • GameStar (Germany)
    • Issue 03/2013 – Issue 03/2013 – One of the "Ten Best C64 Games"
  • Happy Computer
    • Issue 02/1986 - #7 Best Game in 1985 (Readers' Vote)
  • Retro Gamer
    • October 2004 (Issue #9) – #45 Best Game Of All Time (Readers' Vote)
    • Issue 37 - #12 in the "Top 25 Platformers of All Time" poll
  • Zzap!
    • May 1985 (Issue 1) - #2 'It's the Zzap! 64 Top 64!'
Information also contributed by Big John WV, PCGamer77 and Scott G

Related Web Sites

  • Impossible Mission (Site with screenshots of each version, trivia, tips, and the original manual.)
  • The End Zone (Dedicated to end of game sequences with the objective of providing the most definitive and complete 'end of game' information ever assembled for the games featured.)
Contributed to by Trypticon (8205), RKL (5613), Kabushi (125874), gamewarrior (5065), Terok Nor (19006) and Servo (55827)