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zeroWin95.zip *
Windows Application
Mac OS Application (Compressed with StuffIt, encoded in BinHex format. Free StuffIt Expanders are available for most systems at www.stuffit.com.)
zeroDOS.zip *
MS-DOS Application
For all systems. To play, you'll need a TADS 2 Interpreter - visit tads.org for interpreter downloads.
original competition entry
For all systems. To play, you'll need a TADS 2 Interpreter - visit tads.org for interpreter downloads.
Hints for Release 2
Hints for Release 1
* Compressed with ZIP. Free Unzip tools are available for most systems at www.info-zip.org.

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Zero Sum Game

by Cody Sandifer


(based on 17 ratings)
3 member reviews

Game Details

Language: English (en)
Current Version: Release 2
License: Freeware
Development System: TADS 2
Baf's Guide ID: 312
IFIDs:  TADS2-DE35C1D8D950578D67131B997FF0C839
TUID: nzydrfu1rl2qkuop


Nominee, Best Puzzles; Nominee, Best NPCs - 1997 XYZZY Awards

11th Place - 3rd Annual Interactive Fiction Competition (1997)

Editorial Reviews

Baf's Guide

Savagely funny--a sort of anti-fantasy. You've reached the end of a hack-and-slash fantasy quest, but your mother's found out, and she orders you to set everything right. The joke, in part, is that you wreak a lot more havoc trying to fix things than you wrought in the first place, but there's lots more going on, and most of it is extremely amusing. The humor is very dark, however, enough so that some objected to what they considered pointless cruelty. Your feckless sidekick Maurice is immensely amusing--he's packed with silly repartee--and the AMUSING file has lots of extraneous but funny material. Some of the puzzles are quite difficult and require some major intuitive leaps.

-- Duncan Stevens

>VERBOSE -- Paul O'Brian's Interactive Fiction Page

To give it its due, the game does have a clever premise, a promising start, and some good puzzles. Some of these puzzles have no particular moral bent, but are cleverly designed (getting the scroll, getting the key). Others in fact do have the particular ethical direction of reversing wrongs: you give the candy back to the baby, for example. That's why it left such a bad taste in my mouth to learn that other puzzles required coldly slaughtering your friends for the sake of a few points... After that point, I detached from the game, using the walkthrough to see the whole thing and make notes for this review. It didn't get better. Zero Sum Game's gimmick is one that works best the first time it is used -- too bad this game did such a poor job of using it.
See the full review

Genuinely Funny Send-up of an Adventure Game
Your mission: you have completed an average hack-and-slash adventure game, but when you come home, your mother sends you out to undo everything you've done. The goal is therefore to lose all 75 points you have at the start of the game, by unslaying a dragon, giving back treasures, and making good all your dirty deeds. That you frequently have to do more dirty deeds along the way is, of course, part of the humor. (Duncan Stevens)
See the full review

Puzzles range from the fairly obvious to difficult and a good sense of timing is required at two points in the game, so regular saving is required although once you find out how events run their course you won't need to worry. (John Ferris)

The whole game is liberally sprinkled with marvellous characters, who can be interacted with and talked to and questioned, and almost everything you do and say in anyone's presence elicits a funny response. (Bev Truter)
See the full review


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Number of Reviews: 3
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5 of 7 people found the following review helpful:
Interesting, not unique, June 10, 2010
by tggdan3 (Michigan)
This game's premise is similar to Janitor- you're at the end of the game, but have to put everything back to the way it was (because your mom told you so). After that, it's a zork style romp as you try to undo all the things that you did.

Now there are some instances in the game where you have to be "evil" to succeed. That can turn some people off. Other than that, the game is clever, and the puzzles are decent. Often, because you're working backwards, your goals are pretty clear, and it's the way you accomplish the goal that is difficult. I like that about this game.

In some ways this is Zorkian. The biggest turn off involves a puzzle solution that requires you to do evil in order to complete the game. This might not be a big deal if your character is made out to be evil or something, but the purpose is to put everything back the way it was to appease your mother, something that is implied to be a "good" thing.

If you like puzzle style games, try this out. If you don't, this won't be for you.

While the game was fun, the premise was very similar to Janitor, which I played first, so perhaps the experience was not as novel to me as it would have been if this was the first of the two I played.

1 of 1 people found the following review helpful:
Great set-up, good execution, September 25, 2016
Here is the plot of Zero Sum Game: you are an adventurer who needs to go back and undo the puzzles you've solved, decreasing your score as you do so.

This is still an unusual conceit, and even more so in 1997. However, the puzzles are fairly traditional, without particularly relying on the "undo your actions" idea: finding keys to locked doors, killing or placating enemies who block your path.

Some reviewers have criticised the game for being violent. In my opinion, this is a bit exaggerated: it's hardly the IF equivalent of American Psycho, more like a fairly gory episode of Family Guy. That said, there is indeed (non-graphic) violence against innocents on the part of the PC and others, and some (non-graphic, comedic) sexual content. What I came away with was a sense of shallowness and slapstick. I found most of the major characters funny enough, but extremely one-note. The most developed one is probably your non-speaking animal companion, which might be significant. There is a type of fantasy parody story where everyone is stupid, sociopathic and horny, and Zero Sum Game fits into that bracket.

Most of the puzzles are logical and decently clued, and some are very clever. (I particularly enjoyed how you (Spoiler - click to show)resurrect the dragon.) However, some are unintuitive. Most blatantly, at one point you need to hide in one area when an NPC comes in and drops an item: miss it and you lose the item and your chance to complete the game. There is no massively compelling reason that the player should decide to hide in this place and rifle through the NPCs belongings, and I didn't figure it out without a walkthrough.

There is some world-building, but in general, the game's world is extremely thin, throwing together a number of settings (an orphanage, a troll bridge, a castle) because they fit with the puzzles. The writing is uneven. Most of the time it feels bland, but there are also passages of slightly overwrought beauty (such as the description of the oak in the glade), and some of the jokes are very good.

A funny parody adventure for an evening or two, if you're not bothered by violent characters and immature humour, but don't expect to still be thinking about it for weeks afterwards. A game that uses the same conceit, but with (in my opinion) better writing and more inventive puzzles, is Janitor.

1 of 3 people found the following review helpful:
A crude game about losing your points in a Zork-like adventure, February 3, 2016
This game started out relatively well, as your mother encourages you to return everything you've stolen and lose all the points you've won in an adventure.

Unfortunately, the game becomes fairly crude, with: (spoilers)(Spoiler - click to show)

1. A BDSM sex scene
2. An NPC that violently murders everyone he sees
3. two friendly NPCs that you have to murder yourself.

These things were pretty strongly offputting; I'm not sure who the target audience is here.

Not recommended.

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Recommended Lists

Zero Sum Game appears in the following Recommended Lists:

Noteworthy Games Which Can't Be Played on the Web by Walter Sandsquish
Because TADS 2 is still missing a TADS Web UI or Glk server or a JavaScript 'terp.


The following polls include votes for Zero Sum Game:

Sex in non-adult IF by Ferret From Hell
It struck me the other day that sex is one thing that actually seems to feature rarely in IF. What games are there, other than out and out AIF, that give prominence to sex or sex scenes? The only ones that immediately spring to mind are...

Doing things backwards by Mike Ciul
Games that take traditional IF tasks and puzzles, and do them backwards or subvert them in a clever way. Thanks to olethros on raif for the inverse puzzle idea.

Games with NPCs that tag along by Ghalev
List here any games that feature a (preferably memorable!) "sidekick" character - an NPC who follows the viewpoint character around for most or all of the game, as per Floyd in Planetfall or Trent/Tiffany in Leather Goddesses of Phobos.


This is version 5 of this page, edited by Edward Lacey on 18 March 2013 at 6:18am. - View Update History - Edit This Page - Add a News Item