Ancients (Stargate)

The Ancients alphabet (Ancient or Lantean, sometimes transliterated Alteran) is the script of the Ancients — the ascended people who built the Stargates in the Stargate franchise (Roland Emmerich, 1994, then MGM series 1997-2011). It appears in inscriptions of the City of Atlantis, ZPM (Zero Point Module) units, Gate chevrons, and Janus’s holograms in Stargate Atlantis.

The alphabet was designed to give a coherent graphic signature to the most advanced pre-human civilisation of the Stargate universe, in line with the crystal technology and curved shapes that mark its production aesthetic. It is one of the rare fictional alphabets with 14 seasons of design continuity (SG-1 1997-2007 + Atlantis 2004-2009 + Universe 2009-2011).

How does the alphabet work?

The cipher uses a monoalphabetic substitution: every letter of the plaintext is replaced by a glyph drawn from a fixed correspondence table. It is one of the oldest cryptographic techniques on record — already described in antiquity (Caesar cipher, ~50 BC) — and the most directly readable family for a beginner.

The table has 26 glyphs for the Latin letters + 10 glyphs for digits 0-9, i.e. 36 symbols in total. To encrypt, read the text character by character and replace each letter (and digit) with its glyph.

Cryptographic strength: weak. Because every plaintext letter always maps to the same glyph, the cipher falls to a frequency analysis in a few dozen words (in both English and French, E remains the most common letter, an immediate entry point). Monoalphabetic substitutions are therefore used today for their decorative, playful or pedagogical value — not to protect real information.

Historical and modern usage

• Stargate SG-1, Atlantis, Universe (1997-2011) — on Gates, ZPMs, the City of Atlantis, Lantean holograms.
• Stargate films (1994, 2018) — original inscriptions, even rarer.
• Stargate community — used in cosplay, GateCon fan-cons, tattoos.
• Pedagogy — a good example of a production-continuity decorative alphabet.

Related variants

• Goa’uld alphabet — script of the Goa’uld (main antagonists), distinct from the Ancients.
• Asgard — runic script inspired by Futhark, indirect mapping.

What are the weaknesses?

• Monoalphabetic substitution — immediate frequency analysis.
• Documented alphabet — Stargate Wiki, dCode, MGM guides.
• Curved glyphs — risk of confusion between letters with similar terminals.

The 26 glyphs

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

The 10 digits

0

1

2

3

4

5

6

7

8

9