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In Extremis (DOS)

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Developed by
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100 point score based on reviews from various critics.
User Score
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In Extremis is a science-fiction First Person Shooter (FPS) in which you play as a crashed space pilot stranded aboard a derelict vessel. To escape, you must collect key cards and insert them into terminals. Valid cards will give you a code for the current level. That code will grant you access to lockers containing weapons and equipment. A second set of key cards opens up elevators, allowing you to travel to deeper into the ship's 29 levels.

Technically, the game is similar to graphical updates of the Wolfenstein 3-D engine (such as used in the Blake Stone series), and features textured walls along with optional floor and ceiling textures. Faked lighting effects (your screen shifts to a different colour as you pass under coloured lights) also appear. Architecture is still limited to 90 degree angles and heavy on mazes.

Aside from finding new weapons and blasting aliens, you have a limited inventory of pickups to manage. Your suit's air tanks are constantly depleting, and must be replaced with fresh tanks before they run dry. Your suit contains a motion tracker and nightvision, both which drain the same replaceable batteries. Syringes can be collected and used to restore your health. Finally, alien nests appear on some levels and endlessly spawn new enemies. Bombs can be collected and deployed to destroy these.


In Extremis DOS Hey,  ma, I turned on floor and ceiling textures!
In Extremis DOS Herding the player along
In Extremis DOS Intro: emergency measures underway!
In Extremis DOS Lifted off the floor, desperately kicking in my last few moments

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User Reviews

FPS game with a definite 'Alien' flavour, which has some interesting touches, but is ultimately dull. Nick Drew (412) 3 Stars3 Stars3 Stars3 Stars3 Stars

Critic Reviews

Tilt Dec, 1993 90 out of 100 90
PC Joker Mar, 1994 82 out of 100 82
Score Jun, 1994 82 out of 100 82
ASM (Aktueller Software Markt) Apr, 1994 8 out of 12 67
PC Zone May, 1994 67 out of 100 67
PC Games (Germany) Apr, 1994 65 out of 100 65
High Score Jul, 1994 3 out of 5 60
PC Review (UK) Jun, 1994 5 out of 10 50
Just Games Retro Oct 28, 2008 2 Stars2 Stars2 Stars2 Stars2 Stars 40
Secret Service / New S Service Jul, 1994 40 out of 100 40


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In Extremis is perhaps the earliest FPS to feature automatically opening doors, without the use of an action button. Quake is often regarded as the game to pioneer this, but In Extremis was released several years earlier.


The sounds from the game are actual recordings of the sounds from the movie Alien - apparently, without any license or knowledge of the movie's makers.


The game was heavily protected against any debuggers etc. There was no way of cheating in it or taking a screenshot - it blocked such tools as Game Wizard, Soft Ice, and even the Action Replay PC card.

Information also contributed by Nick Drew">Nick Drew
Jaromir Krol (271) added In Extremis (DOS) on Feb 08, 2001