Oppidum - Skirmishes during Caesar's Gallic Wars



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		Celtic Warriors against Roman Legionaries

Roma Victrix

The Game

OPPIDUM is a skirmish game that takes place during the 50s BC, when Julius Caesar successively attacked the various Celtic and Germanic peoples in Western Europe and (future Great) Britain. The game uses the concepts and scale of the Cry Havoc series. The different scenarios allow you to simulate ambushes, attempts by the defenders of Alesia to break the siege or the landing of Roman legionnaires on a beach of Britannia defended by warriors on chariots.

Box Contents

> (6) 22" x 16" (or 56 x 40 cm) full-color tactical maps;
> (3) 8" x 12" (or 21 x 29.7 cm) counter sheet printed in full color;
> (1) 16-page rulebook;
> (1) 36-page booklet including the historical background and 16 scenarios:
> Several play sheets for handy reference;
> (1) 10-sided die.

Guiscard: Skirmish medieval game, from age 14 and up

The Characters

The characters are displayed through counters using the Outremer/Croisades format. A 3-letter marking system enables easy differentiation of the various playing pieces on the maps.

Counters are available on several A4 sheets:
> The Celts (Front - Back) - Last update: Sep 18, 2024
> The Romans (Front - Back) - Last update: Sep 18, 2024
> The Germanic warriors (Front - Back) - Last update: Sep 18, 2024

Note: Click on the counters below to see the various stances of each character (wounded, on foot, stun or dead).

The Celts

> Medium cavalry - 1	> Medium cavalry - 2	> Medium cavalry - 3	> Light cavalry - 1	> Light cavalry - 2	> Light cavalry - 3

> Medium infantry - 1	> Medium infantry - 2	> Light infantry - 1	> Light infantry - 2	> Light infantry - 3	> Light infantry - 4

> Nude warriors - 1	> Nude warriors - 2	> Nude warriors - 3	> Slingers	> Archers 1	> Archers 2

> Draft ponies	> Celtic chariot	> Charioteer	> Medium infantry	> Carnyx

> Peasant 1	> Peasant 2	> Druid	> Woman
The Romans

> Cavalry 1	> Cavalry 2	> Cavalry 3

> Centurion 1	> Centurion 2	> Centurion 3

> Standard Bearer	> Buccinator	> Scorpio	> Servant 1	> Servant 2

> Legionary 1	> Legionary 2	> Legionary 3	> Legionary 4	> Legionary 5	> Legionary 6

> Civilian 1	> Civilian 2	> Senator	> Noble woman
The Roman Auxiliaries

> Iberian Light Cavalry	> Light Gallic Cavalry	> Baleraric Slingers	> Cretan Archers	> Numidan Peltasts
The Germanic warriors

> Light Cavalry 1	> Light Cavalry 2	> Light Cavalry 3	> Light Cavalry 4

> Light infantry 1	> Light infantry 2	> Light infantry 3	> Light infantry 4	> Light infantry 5	> Light infantry 6

> Javelin 1	> Javelin 2

The Maps

The game includes 6 tactical maps: 2 maps of Julius Caesar's fortifications at Alesia, the Contravallation which prevented the besieged from escaping and the Circumvallation, intended to prevent the arrival of a relief army. A map of the entrance gate to a Celtic oppidum, called Murus Gallicus. 2 maps that can be put together to represent either a river or a shore. And a map of an open terrain with a few slopes.

> The Contravallation	> A2 (56cm x 40cm)	> The Circumvallation	> A2 (56cm x 40cm)
> Oppidum 1	> A2 (56cm x 40cm)	> The Riverbank	> A2 (56cm x 40cm)
> The Ridge	> A2 (56cm x 40cm)	> The Spring	> A2 (56cm x 40cm)

The Rules & Booklets

The rules are derived from the various games of the Norman Saga series, with a focus on standardization and clarification. You can read the Designer Notes on BoardGameGeek.

Rulebook

PDF
> Rulebook v1.0 - 2,046 Kb

Historical Background & Scenarios

PDF
> History & Scenarios V1.0 - 5,229 Kb

Play sheets

PDF (zipped)
> Play Sheets - 12.9 Mb

Celtic Oppidum Expansion

PDF
> Expansion v1.0 - 2.1 Mb

Scenario Balancing Utility:
This Excel tool will help you build balanced scenarios using the Purchase Table included in the Scenario booklet. All the characteristics of the various OPPIDUM characters are also included in various tabs.

ZIP (Excel)
> Scenario Balancing Utility - 38 Kb

The VASSAL Module

Oleg Hudiakov designed this superb VASSAL module. You can play aIl 16 scenarios of the boxed game plus the 4 scenarios included in the 'Celtic Oppidum' expansion.

VASSAL module for OPPIDUM

> OPPIDUM module v1.0.1 - 198 Mb
Sep 3, 2026

Extension: The Celtic Oppidum

This extension is made of 3 additional maps which can be assembled with the Oppidum 1 map included in the boxed game to form a larger city.
- The Oppidum 2 map displays the large estate of a Celtic noble, with several courtyards and rooms. It is inspired by an existing building found in the oppidum of Bibracte in Central France.
- The Oppidum 3 map displays 5 simple houses.
- The Oppidum 4 map features a Celtic sanctuary with its sacrificial pits. It is inspired by a building found in the oppidum of Alesia.
The extension is provided with a 8-page booklet including a description and 4 scenarios.

> Oppidum 2

> A2
(56cm x 40cm)

> Oppidum 3

> A2
(56cm x 40cm)

> Oppidum 4

> A2
(56cm x 40cm)

Map Assemblies

The maps allow many combinations. The section plan below explains the layout of Caesar's various defenses in Alesia.

Additional Scenarios

These scenarios were designed by community members and can be downloaded free of charge.

Sc 1 - For a Handful of Grain: Romans are about to plunder a village when a group of Gallic warriors seek to punish the invaders. Scenario by Erwann Griffon.

JPG
> eScOP1 - 0.9 Mo - 10/31/2025

Sc 2 - By the power of the sacred spring: A druid and his followers are celebrating a ritual near a spring when Germanic raiders attempt to seize the power of this supposedly magical spring. Scenario by Erwann Griffon.

JPG
> eScOP2 - 1.3 Mo - 10/31/2025



	Historic-One Roma Victrix • Oppidum • Lorica Segmentata -------- The Norman Saga • Guiscard 2 • Diex Aïe 2 • The Anarchy • Ager Sanguinis • Montgisard • Sherwood -------- Our extensions • The Magna Carta • The Belfry • Horse Raiders • Nefs & Galleys • The Caravanserai • The Welsh Castle • The Fortified Harbor • Orléans 1429 • Basileus • Montjoie Footsore • Cry Havoc 2