Code Wheels
Analog DRM
The rotating cardboard discs used as copy protection in games like Monkey Island, requiring players to align symbols and read codes - creative but photocopiable.
Overview
Code wheels (or "feelies" — Infocom's term, later adopted broadly) were rotating cardboard discs used as copy protection, primarily in adventure and RPG games. Players would align symbols on the wheel and read off the resulting code through a window in the disc. Used famously in The Secret of Monkey Island ("Dial-a-Pirate"), they were more creative than intrusive, harder to copy than a printed manual, and ultimately a fond memory of the era rather than a despised mechanism.
Fast facts
- Era: Late 1980s through early 1990s — peak ~1990-92.
- Users: LucasArts/Lucasfilm Games, SSI, Origin, Sierra (occasionally), MicroProse.
- Method: Physical rotating cardboard disc with cutouts and printed symbols.
- Famous example: Dial-a-Pirate (The Secret of Monkey Island).
- Weakness: Photocopiable in the scanner era; flat scans worked well enough.
- Legacy: Fondly remembered, sought after as collectibles.
How they worked
The typical code wheel has two paper or cardboard discs joined at the centre, free to rotate. The outer disc has windows cut through it; the inner disc has printed text or symbols visible through those windows when aligned.
| Step | Action |
|---|---|
| 1 | Game shows a challenge ("What does this pirate say?") |
| 2 | Player finds the matching pirate face on the outer wheel |
| 3 | Aligns it with a clue position on the inner wheel |
| 4 | Reads the answer code through the window |
| 5 | Types code into the game to proceed |
Done well, the wheel feels like a prop from the game's world — the Monkey Island dial-a-pirate is part of the pirate-themed packaging, not a sterile copy-protection mechanism.
Famous examples
| Game | Wheel name | Theme | Notes |
|---|---|---|---|
| The Secret of Monkey Island (LucasArts, 1990) | Dial-a-Pirate | Pirate faces + lifespans | The canonical example; iconic in adventure-game lore |
| Pool of Radiance (SSI, 1988) | Translation wheel | Runes + words | Aligned runes to find spell names |
| Indiana Jones and the Last Crusade (LucasArts, 1989) | Grail symbol wheel | Symbols + answers | Trivia-styled questions |
| Loom (LucasArts, 1990) | Book of Patterns | Musical drafts | Spell pattern reference; partially in-fiction |
| Starflight (Binary Systems, 1986) | Star map | Coordinates | Spatial-coordinate decoder |
| Wing Commander (Origin, 1990) | (Manual + ship recognition) | Ships | Strictly speaking a manual lookup, often grouped with code wheels |
| Star Control II (Accolade, 1992) | Star/race chart | Spacefaring races | Wheel-style chart in the manual |
Design philosophy
Code wheels were designed to be:
- Thematic — part of the game world; the Monkey Island wheel feels like pirate trivia.
- Physical — hard to digitise in the pre-scanner era, especially in colour.
- Less intrusive — once per game start, not per level transition like Lenslok.
- Collectible — beautiful packaging that justified the box premium for boxed releases.
The Infocom "feelies" tradition (in-box trinkets for Hitchhiker's Guide, Deadline, A Mind Forever Voyaging) directly influenced the LucasArts wheel philosophy: the protection should also be a souvenir.
Why they worked (briefly)
In the pre-scanner era of the late 1980s:
- Photocopying round objects was awkward — reproducing a wheel that rotates accurately required care and a craft knife.
- Colour wheels harder to copy well — most photocopiers were black-and-white into the early 90s.
- Most users didn't try — typing answers from a friend's wheel required a phone call; harder than borrowing a manual.
- Physical object felt valuable — many players genuinely enjoyed having the wheel.
Why they failed
Eventually:
- Scanners became common — the late 90s home-PC scanner boom flattened the optical advantage.
- Flat scans worked well enough — even a scanned-and-printed wheel can be cut out and assembled with a brad.
- Complete code lists shared online — once the internet had FAQs, dial-a-pirate full tables were a search away.
- Emulators included cracks — adventure-game-specific re-releases (ScummVM etc.) bypass protection automatically.
Player reception
Unlike Lenslok, code wheels were:
- Generally tolerated.
- Sometimes enjoyed as part of the game-world fiction.
- Seen as creative and fitting.
- Fondly remembered today — thread after thread on retro forums recall the dial-a-pirate as an early gaming highlight.
Legacy
Code wheels represent copy protection done (relatively) right — integrated into the game's theme, not overly intrusive, and sometimes genuinely fun to use. They are now collectors' items, valued for nostalgia rather than resented for inconvenience. Modern indie releases (e.g. Thimbleweed Park, 2017, by ex-LucasArts staff) include playful nods to the dial-a-pirate tradition as a wink to the audience.