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Key & Compass presents:
Zodiac
by Charles Moore, Jr.

Zodiac is a Z-machine interactive fiction game written with Inform 6 and is © 2025 by Charles Moore, Jr.. It was an entry in PunyComp 2025 where it took 2nd Place overall, 1st Place for Writing, 2nd Place for Puzzles, and 5th Place for Playability on 8-bit computers.

In this James Bond-inspired game, you play as Arthur Blonde, MI5's least-talented agent. Nevertheless, you're given a mission: go to Zdratz, Dynobia, find the hidden Zodiac base where the villainous Dr. Dipole and his new super-weapon are lurking, and destroy it. Everyone else was busy, so it's your turn. Good luck, agent Blonde.

This solution is by David Welbourn, and is based on Release 1 of the game.

SPOILERS AHEAD. Reading a walkthrough prematurely can sometimes diminish one's enjoyment of an interactive fiction game. Please make an honest effort to play the game before reading this walkthrough.


Maps

Map 1: Zdratz, Djynobia

LowerStation(in railcar) LowerStation Casino VIPRoom Funicular(in railcar) Base PorteCochere La Disco-theque Promenade CentralSquare Car Park Street In thephonebooth OutsideCinema Road FunicularTunnel(in railcar) Tunnel Elevator HotelLobby Catacombs Street TheaterLobby StairwayBottom Funicular(in railcar) Elevator Outsiderooms11 & 12 FirstFloor Outsiderooms13 & 14 Alley House Outsiderooms21 & 22 SecondFloor Outsiderooms23 & 24 ProjectionBooth StairwayTop UpperStation(in railcar) UpperStation Mountain-top Room 24 z z u out z d d d z z z d in z put cardin slot u u u z (need carto go east) (auto)

Map 2: Road east of Zdratz

OutsideCinema Road Dead End Henricrasheshere RoadBend Fork Svetlanastops here Road Road

Map 3: Tunnels

Basement Tunnel Tunnel Tunnel 🔺︎ ◀︎ Tunnel Tunnel Tunnel Tunnel Tunnel Tunnel 🔺︎ Tunnel ◀︎ Tunnel Tunnel Tunnel 🔺︎ Catacombs Tunnel Tunnel Tunnel Tunnel Tunnel Street u d

Map 4: Zodiac base

EscapePod Dome Lair CrewQuarters Junction Engineer-ing Lobby Elevator Elevator (auto) d u put cardin slot

Walkthrough

Conference Room

You have three turns to get your bearings.

> x me. x table. x screen.

Sir Alastair McGuffin, operations chief of MI5, explains your mission: go to Zdratz, Djynobia, and destroy Dr. Dipole's new super-weapon.

And now you're there.

Central Square

Check out your inventory and start looking around.

> i. x key. x pen.

> x fountain. x token. take it.

> x Poseidon. x fishes. x water. x tourists.

> n.

Porte Cochere

> x casino. x arch. x doorman. greet doorman.

> n.

Casino

> x tables. x machines. x smoke.

> e.

VIP Room

> x Alexei. x wheel. x table.

> x croupier. x rake. x chips.

> w. s.

Porte Cochere

> ask doorman about Alexei. (He blows up when he loses.)

> ask doorman about roulette.

> ask doorman about casino.

> ask doorman about Zodiac.

> s. e.

Car Park

> x Aspic. x Alfa. e.

Street (at manhole)

> x manhole. se.

Street (at phone booth)

> x booth. x opening. x Raoul.

> push button. put pen in opening. z. z.

A green mist erupts from the pen, and Raoul flees from the stench.

> z. z. (The gas dissipates, and the payphone rings.)

> in.

In The Phone Booth

> answer phone.

You hear one of several random statements like "My uncle smells of pickles". Remember this as SECRET-PHRASE.

> take pen. x phone.

> x slot. x return. x keypad. x handset. x cord.

> out. s.

Alley

> x door. x peephole.

> knock on door.

> say SECRET-PHRASE.

> take key. x it. ("24")

> n. ne.

Outside Cinema

> x disco. x cinema. read marquee.

> s.

Theater Lobby

I note there's nowhere to buy tickets, and the command BUY isn't supported anyway.

> x chandeliers. x man. greet man.

> sore. (He stops you, asking for your ticket.)

> n. n.

La Discotheque

> x speakers. x lights.

> turn on left. (The black lights are now on.)

> turn off left.

> turn on right. x ball. (lit and turning)

> turn off right.

> s. sw. nw. w. w. w.

Promenade

> x trees. read sign.

> nw.

Base

> x mt. x hills. x tunnel.

> x station. x turnstile. x booth. x woman.

> greet woman.

> put token in slot. n.

Lower Station

> x car. w.

Lower Station (in the railcar)

> z. z. (The car starts moving.)

Funicular (in the railcar)

> x forest. z.

Funicular Tunnel (in the railcar)

> e. e.

Elevator

> x panel. x slot. w.

Tunnel

> z. (repeat waiting until another car is passing)

> w.

Funicular (in the railcar)

> z. z.

Upper Station (in the railcar)

> e.

Upper Station

> x mop. take it.

> e.

Mountaintop

> hit Vlacz with mop. (He's gone.)

> take briefcase. x it. (has button)

> open it. x counter.

> take counter and token.

> x bench. x forests.

> w.

Upper Station

If necessary, wait until the car is here.

> w.

Upper Station (in the railcar)

> z. z. (The car starts to move)

Funicular (in the railcar)

> z. z.

Funicular Tunnel (in the railcar)

> z.

Funicular (in the railcar)

> z. z.

Lower Station (in the railcar)

> e. s. se. e. s.

Hotel Lobby

> x rugs. x Serge. greet Serge.

> u. (He stops you: guests only.)

> show dull key to Serge. (ack. He takes it.)

The briefcase can emit a knockout gas three turns after you push its button.

> push briefcase button.

> drop briefcase. n. z. s.

Serge is now asleep.

The briefcase only had one dose of the gas, and you don't need it to help you carry anything. So if you've taken everything out of it, you might as well leave the empty briefcase here.

> search Serge. (You regain the room key.)

> u. u. e. s. (using the room key.)

Room 24

> x cat. pet cat. (You find a container on its collar.)

> open container. take film. x it.

> x bed. look under it.

> x desk. open drawer. take bulbs. x bulb.

> n.

Outside Rooms 23 & 24

You surprise Henri who makes a run for it. Follow him!

> w. d. d. n. e.

Car Park

Henri jumps into the Alfa Romero and heads east in it.

> enter car. e. se. ne. e. se. e. ne.

Dead End

The Alfa Romero crashed into an oak, and he's babbling in a stupor. Pay attention to what he says ("Reversing the cables will short out the whole...") while you grab his stuff.

> out. x Alfa. take magazine.

> x Henri. search him. (You acquire a ticket.)

> x oak. x ticket. (for the cinema)

> x magazine. (You acquire a piece of paper.)

> x paper. (appears blank)

Take your car back to the car park.

> enter my car. sw. w. nw. w. sw. nw. w.

Car Park

> out. e. se. ne. n.

La Discotheque

> turn on left switch.

> x paper. (A random four-digit number is now visible; remember it as KEYPAD-CODE.)

> turn off left switch.

> s. s.

Theater Lobby

> give ticket to taker. (He leaves entirely?)

> s.

House

Nothing to find here.

> x screen. x seats.

> n. e. u. w.

Projection Booth

> x projector. x recess.

> put cassette in recess.

> x screen.

Make a note of the randomized handwriting, eg: "SY CA PA". This walkthrough will refer to these later as the SCHEMATIC-CODES.

> take cassette.

> e. d. w. n. sw. nw.

Street

> open manhole. d.

Catacombs

> x sign. (radiation warning)

> turn on geiger. n. w. n. w. n.

Tunnel

Use the number you read on the paper under the discotheque's black lights.

> x door. x keypad. type KEYPAD-CODE.

> w.

Basement

> x table. x transmitter. take it.

> x specs. take them. wear them.

> e. s. e. s. e. s.

Catacombs

> turn off counter. u.

Street (near manhole)

A brunette in an Aston-Martin nearly flattens you. You should go after her.

> close manhole. w.

Car Park

This time, when you get to the fork, head southeast.

> enter car. e. se. ne. e. se. e. se. e.

Road (where Svetlana is)

You recognize KGB agent Svetlana Kilzalott, and she recognizes you too. She is not hostile.

> out. x her. greet her.

> ask her about herself.

> ask her about Aston. ask her about Zodiac.

> ask her about Dipole. ask her about Zdratz.

> x Aston. x engine. x wrench.

> take wrench. (The engine roars to life. Svetlana gives you something before speeding off to the east.)

> i. x goggles.

> wear goggles. (They're night-vision goggles.)

Take your car back to the car park once more.

> enter car. w. nw. w. nw. w.

> sw. nw. w.

Car Park

> out. w. n.

Porte Cochere

Note that if you're still carrying the briefcase, the doorman stops you. The briefcase isn't allowed inside. And, if you drop anything here, he hands it back to you. You can drop the briefcase in the square.

> n. e.

VIP Room

The transmitter controls this roulette wheel. If Alexei plays Red, turn the knob to Black and vice-versa.

> turn on transmitter.

> z. (If necessary, wait until Alexei places a bet.)

> turn knob to LOSING-COLOR.

> z. (Repeat until Alexei loses once.)

Alexei places his second bet.

> turn knob to LOSING-COLOR.

> z. z. z. (Alexei loses a second time.)

Alexei places his third bet.

> turn knob to LOSING-COLOR.

> z. z. z. (Alexei loses a third time.)

Alexei places his fourth bet.

> turn knob to LOSING-COLOR.

> z. z. z. (Alexei loses a fourth time.)

Several burly men remove the angry Alexei, and a pack of cards gets scattered. If you're wearing the spectacles, you see that a card, eg: the three of hearts, has circuitry inside it.

> x cards. take CIRCUITRY-CARD. x it.

> turn off transmitter.

> w. s. s.

Central Square

You should now be ready to invade the Zodiac base. You need the token, the card, the wrench, the three light bulbs, the goggles, and the knowledge of the three codes you saw in the theater.

> w. nw.

Base

> put token in slot. n. w.

Lower Station (in the railcar)

> z. z. z. z.

Funicular Tunnel (in the railcar)

> e. e.

Elevator

> put card in slot. (The elevator descends.)

> take card. w.

Lobby

> read sign. ("Welcome to Zodiac, ... since 1949")

> n.

Junction

CAUTION: If you go west from here, you enter the crew quarters and get killed instantly. Don't do that.

> x pipes. e.

Engineering

> x dials. x panel. x bolt.

> turn bolt with wrench.

A red cable is plugged into a copper outlet, and a blue cable is plugged into a steel outlet. Do you remember what Henri said about reversing the cables?

> unplug red. unplug blue.

> put blue in copper. put red in steel.

> w. u.

Dome

Convert each of the three SCHEMATIC-CODES you got from the theater into a CITY, then put the three bulbs into those cities' plugs. Careful! If you get this wrong, you die.

> x map.

> put bulb in CITY1.

> put bulb in CITY2.

> put bulb in CITY3.

The dome raises and two new exits are available to the north and east. The east exit is somewhat dangerous unless you switched the cables.

> look. x sign. ("Escape Pod - Capacity: 1, Buttocks-Activated")

> n.

Escape Pod

> x jumpseat. x porthole.

> s. e.

Lair

> hit Dipole.

He acts first and his big bad weapon explodes. He's knocked out, alarms sound, the door opens, and the lights go out!

> wear goggles.

CAUTION: Don't waste time sightseeing. A few turns from now, explosions rock the base, and the mountain collapses on top of it. You don't want to be here when that happens.

> w. n.

Escape Pod

> sit on jumpseat.

*** You have won ***


Extras

Characters

Background characters and mentions:


Credits

This is the response to ABOUT or CREDITS:

Zodiac
An Arthur Blonde Mission
Release 1 / Serial number 251201 / Inform v6.45 PunyInform v6.0.2

Many thanks to Shawn Sijnstra, R. J. Kowalski, Andrew Apted, and Garry Francis for input and playtesting.


Endings


Inventory

Items are listed in the order they're acquired in this walkthrough. You have no obvious inventory limits.


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