The ARDA Classification System

ARDA and Miller Numbers by Fred C. Davis

A. Ancient Period (to 475 A.D)

b. Britain
c. Carthage, Rome, and the Greek East
g. Greece
i. Persian Empire
o. Indeterminate Period
p. Palestine
r. Pre-Roman Italy / Roman Empire

B. Bio-sphere Games

e. Evolution
s. Survival

C. Europe 1901-1919 (Modifications of the Basic Game)

With changes to both map and rules, but essentially based on regular board.
Also look at “R”, rules revisions using regular map

a. Alternate world, different great powers
b. changes to both map and rules (average complexity)
c. High complexity rules
e. One extra power added
g. One giant power added
h. High complexity map
m. Minor changes to map only
n. Two Extra Great Powers added (see also Gf, Gh, Gp)
s. Identical Regular Maps, used for Different Eras
t. Team game on modified board
v. Changing values for supply centers

D. Africa

a. Pre-colonial period (roughly before 1860)
c. Colonial Period (1861 – 1959)
m. Modern Period (1960 onwards)

E. Australasia, Asia and Middle East

a. All Asia
c. China
e. East Asia
i. India
j. Japan
m. Middle East
n. Australia and New Zealand
s. Southeast Asia

F. Fantasy Settings
(see “T” for Tolkien variants)

a. Kregen
b. Barsoom
c. Chronicles (of Thomas Covenant)
d. Darlana
e. Earthsea
f. Dune
h. Conan the Barbarian – Hyboria
l. C.S. Lewis Narnia
m. Miscellaneous Settings
n. No Specific Literary Setting
p. Terry Prachett
v. Dying Earth
w. Witch World
y. Elric – The Young Kingdoms

G. Global Games

e. Global/Economic
f. 1921 Onwards
h. Up to 1870
p. 1871 – 1920

H. Europe, 1501-1900

a. 16th Century
b. 17th Century
c. 18th Century (1701-1789)
n. Napoleonic Period (1789 – 1815)
p. Late 19th Century (1815-1900)
x. Indeterminate Date

L. Central and South America

b. Both Central and South America
c. Central America
r. One region / small area
s. South America

M.  Europe, 476-1500 (Medieval)

a. 476-900
b. 901-1050
c. 1051-1200
d. 1201-1350
i. Indeterminate Date

N. North America
(see also “W”, Western Hemisphere)

a. Entire Continent
e. Eastern Area
m. Mexico
p. The Early Period/Indians
s. One State, Province, or Small Region
u. United States

O. Oceans

a. Map Centered on Atlantic Ocean
d. Map Centered on Australia and Surrounding Seas
n. Map Centered on Antarctic Ocean
p. Map Centered on Pacific Ocean
w. Map Centered on World Oceans

P. European Regions

a. Austria-Hungary
b. Balkan Region
d. Low Countries
e. British Isles (or part thereof)
f. France
g. Germany
h. Iberia
i. Ireland
n. Northwest (British Isles/France/Low Countries)
r. Russia (including Siberia)
s. Scandinavia (see also “z”, North Sea and Baltic)
w. Italy
z. North Sea and Baltic(see also “s”, Scandinavia)

Q. Europe After 1920

f. 1920-1933
h. World War II and Origins (1934-1945)
p. Post-World War II (1946-Near Future)
r. Europe, the far future

R. Rules Revisions Using the Regular Board (No or Minor Map Changes)

a. Regular Rules Plus Rules for Other Games
b. Change to One Basic Component Only
(Minor Revisions-Short Rules)
(see also Hidden Movement (rd), Economic Games (re), New Types of Units Only (rn))
c. Players Change Rules During Game
d. Hidden Movement
e. Economic Games (see also cc08, ge)
f. Fewer Players Than Seven (see also rx, rz)
g. Special Powers/Characteristics
h. Home Centers Assigned at Random; Large Number of Players
k. Earlier and Pirated Versions
m. Major Revisions (Medium-complexity Rules)
n. New Type(s) of Unit(s) Only
p. Essays/Compilations On/Of Simple Variants (see also rm15/07)
r. Random and Chaotic Alterations of the Map
s. Major Revisions With Simple Rules
t. Team Games (see also ct01)
u. Players Remake Map or Map Alters Progressively
v. Major Revisions With Complex Rules
w. Alternate Past or Future
x. Two Players Only
y. One Player Only
z. Three Players Only (see also “uu03”)

S. Science Fiction and Space

a. Based on the Foundation Novels by Isaac Asimov
b. Based on the Spindizzy Novels by James Blish
g. Planets, Stars, and/or Galaxies
t. Star Trek

T. Tolkien-Based Games

a. Angmar Period (Third Age)
f. First Age
g. Fifth Age
m. Multiple Scenarios
s. Super-Sauron (Third Age)
w. War of the Ring, Without Super-Sauron (Third Age)

U. Abstract and Hypothetical Scenarios

a. Alternate World
c. Map Constructed Before Game
d. Map Constructed During Game
e. Map Discovered During Game
g. Geometrical (Perfectly Balanced) Board
h. Hybrid Games
m. Board is a Maze
n. No Board At All
r. Hypothetical Board with Random and Chaotic Changes
s. Stock/Currency controls/influences
u. Hypothetical Geographic Area

V. Put-On, Jokes, and Satires

b. Board is a joke
c. Social Satire
g. Gambling
h. Hobby Satire
j. Rules are a Joke

W. Western Hemisphere

c. Colonial Period

X. Expansions of the Regular Board

a. Extra Abstract or Unreal Spaces
d. Added Area Not Directly Connected to Main Board
m. Youngstown Variants
o. Other Designs with Large Areas Added East and/or South of the Main Board
r. Board and Rules Changed

Y. Diplomacy-Related Games – Non-Variants

a. Articles
c. Commercial Strategy / War Games
e. 1830 Variants
f. Fantasy Games
g. Amateur Strategy Games
k. Kingmaker and Variants
m. Monetary Games
o. Rules Modules / Add-ons to existing variants
p. Battle of Philosophy
r. Postal Rules for Other Games
s. Stock Market/Currency in conjunction with Diplomacy
v. Variants of Monopoly
w. Amateur Wargames
y. Sports Games
z. Word Games (including Scrabble)

Z. Political Games

a. Goal is to Win an Election