Check your edition
Editions & platforms
| Edition | Platform | Differences & notes |
|---|---|---|
| 1994 / Enhanced Edition | MS-DOS, Macintosh, PC-98, Windows | The original and Enhanced Edition use the same campaign. The 2023 remake has its own guide. |
Deck 1 · Medical
Take the equipment and standard access card from the starting locker. The first door opens with 451. Check the room across the corridor for the Group Access Card. For early equipment, use Medical cyberspace and check the doors it unlocks for the Mag-Pulse. The optional armory opens with 705.
Activate the first energy bridge with its panel and the next with its lever. Destroy the computer nodes and write down the red digit as position 1. Destroy cameras when a security threshold blocks a route on any deck. Take the elevator to Research.
Research and Reactor · Mining laser
Use the right circuit breaker in Alpha to restore lighting. Get SCI access from the Admin Security cyberspace terminal and open the library. The library terminal can reveal the fixed laser override, 199. As an optional detour, use 623 at Robot Maintenance to stop robot production.
Use the switch inside Radioactive Storage in Gamma to lower the force field and collect X-22. Destroy the Research nodes and record digit 2. Ride down to Reactor and solve the panel on the route to the control area. Insert X-22 into the radiation shield receptacle and pull its lever. Then take the repulsor lift to Safety Override, enter 199, and operate the override lever.
Back on Research, fire the laser from central particle beam control. The shield you activated prevents it from hitting Earth and the laser is destroyed. Use the elevator to Maintenance.
Maintenance, Storage, and Flight Deck
Destroy the Maintenance computer nodes and record digit 3. Take the freight elevator to Storage. Get digit 4 from the node room. Drop down in Storage 1 and find the button under a crate. It helps open the repulsor-lift route to four units of Z-44 Plastique.
Open Storage Cell 9 with 838 for the Enviro-Suit. Logs in Storage 6 and 7 provide the outside digits. On Flight Deck, solve the energy bridge panel, continue up the ladder, and destroy the nodes for digit 5. Return through Maintenance and take the elevator to Executive.
Executive · Three groves and relay 428
Visit Alpha and Delta Grove and disable both interlocks. For Beta, unlock the grove elevator through cyberspace and get the Administrative Access Card. Wear the Enviro-Suit, open the doors near the entrance, and drop through the second one to reach the interlock route.
Open the maintenance crawlway with 711. Destroy the Executive nodes for digit 6 and use Jettison Enable Master Control. The failed attempt sends you to the Diagnostic Log on Maintenance. The relay analyzer uses 428. Take the repulsor lift to collect an Interface Demodulator and replace relay 428 in Delta Maintenance.
Return to Executive. Activate the master control and then the separate Beta Jettison lever. Take the elevator near the master control to Systems Engineering.
Systems Engineering · Antennas and self-destruct
Pick up the Engineering Access Card in Alpha and find the four antenna relay panels. Open each panel and use one Z-44 charge per target. Keep an escape route clear, especially if a force field alters access. Check the clothing beyond the irradiated section in Beta for a stronger Enviro-Suit. Cameras and nodes on deck 7 can make access easier.
After the message from Earth, return to the Reactor Core. Take the repulsor lift and enter the digits from Medical through Executive at the keypad. Pull the large lever. You can then attempt an optional escape on Flight Deck with 001. For the main route, go through Systems Engineering to Security.
Security, Bridge, and SHODAN
Work up the repulsor lifts in Security and switch off the force field. Get the Command Access Card for the energy grating and activate the central force bridge. Climb at the far end, defeat the enemy, and take its Personal Access Card for the Bridge elevator.
On the Bridge, the Isolinear Chipset is in the cage in the east area. The wall button teleports you in. Use the button inside the cage to return. Solve the three wiring panels to lower the force doors in front of Computer Program Entry. Insert the chipset there and proceed to the cyberspace terminal in the central area.
SHODAN is off the main current in the final cyberspace. Search for the chamber with the large gray cone and fight the core there. The original game uses ordinary cyberspace movement for its finale.
Starting door · 451
Medical · Healing Suites
The starting documents give the combination.
Show solution
Step 1
Enter 451 at the matching keypad.
Armory · 705
Medical · Armory
The Human Resistance log gives the clue.
Show solution
Step 1
Enter 705 at the matching keypad.
Laser safety override · 199
Reactor · Safety Override
The Research library supplies the code.
Show solution
Step 1
Enter 199 at the matching keypad.
Robot production · 623
Research · Robot Maintenance
Find the Robot Production Security Code log.
Show solution
Step 1
Enter 623 at the matching keypad.
Relay analyzer · 428
Maintenance · Relay Analyzer
The failed jettison attempt leads to diagnostics.
Show solution
Step 1
Enter 428 at the matching keypad.
Enviro-Suit · 838
Storage · Storage Cell 9
Logs from Storage 6 and 7 give the two outer digits.
Show solution
Step 1
Enter 838 at the matching keypad.
Maintenance crawlway · 711
Executive · Crawlway
Check the displays near the elevator to Maintenance.
Show solution
Step 1
Enter 711 at the matching keypad.
Escape pods · 001
Flight Deck · Escape Pods
The message after the antenna mission includes the two leading zeroes.
Show solution
Step 1
Enter 001 at the matching keypad.
Self-destruct · Random code
Reactor Core
Use one digit from the node room on each deck from 1 through 6.
Show solution
Step 1
Destroy the nodes and note the digits in deck order.
Step 2
After destroying the antennas, use the repulsor lift inside the Reactor Core.
Step 3
Enter the digits from 1–3 and then 4–6. Pull the self-destruct lever.
Bridge · Three wiring panels
Bridge · Force Doors
One panel is behind a sequence of switches in wall recesses.
Show solution
Step 1
Wire the Bridge panels with red 1–4, blue 3–2, violet 2–3, and yellow 4–1.
Step 2
For the switch sequence, press each newly revealed button until you reach the force bridge and last panel.
Step 3
Once the three force doors are open, insert the chipset from the east cage into the computer slot in the west.
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System Shock (1994)
Your checklist
Ticks are saved on this device for each game and carry over when you change language. The counter measures guide tasks and does not alter your game save.
Sources & editorial date
Independently written game guidance. The following sources support quest routes, mechanics and edition notes. Editorial date: 12 November 2026.
- Todd Bailey (Origin QA) · Original walkthrough and maps ↗www.systemshock.org
- Steam Community · Classic walkthrough ↗steamcommunity.com
- System Shock Wiki · Original keypad codes ↗shodan.fandom.com
- MobyGames – Original releases ↗www.mobygames.com
In-game names may differ between language versions. Report a correction.