Sword & Siege Crusades: Book I

Sword & Siege Crusades: Book I

Wargame Design Studio · 2026 · Strategy, Turn-Based Strategy, Military, Medieval, Historical

PC
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About Sword & Siege Crusades: Book I

Crusades: Book IMarch east into one of history’s most consequential medieval conflicts in Crusades: Book I, a detailed tactical wargame covering the battles and campaigns of the First and Second Crusades and the battles fought between them.Beginning with Pope Urban II’s call to arms in 1095, Crusades: Book I follows the rise of the crusading movement from its explosive beginning through the capture of Jerusalem, the creation of the Latin states, and the growing pressure of increasingly organized resistance that culminated in the failed siege of Damascus in 1148.Take command in Crusades: Book I, where 40-meter hexes and 10-minute turns place you in control of medieval armies fighting for cities, fortresses, roads, and passes. Every battle is shaped by the realities of the age: detailed siege warfare, difficult terrain, fragile supply, and the constant struggle to hold a frontier with limited manpower. Bring medieval sieges to life with Mangonels, Onagers, Ballistae, Trebuchets, Siege Towers, Battering Rams, and ladders.

Command the Armies of the Crusading Era

Recreate the major campaigns of the 1st and 2nd Crusades and the battles between from either side of the conflict.Lead the forces of the Crusader states and western armies, including:
  • Knights
  • Men-at-arms
  • Spearmen
  • Crossbowmen
  • Archers
  • Pilgrims and levy forces
Or take command of the Islamic alliances and regional powers, including:
  • Turkish cavalry
  • Infantry armed with spears and swords
  • Archers
  • Garrison troops
  • Regional field armies
The historically accurate Order of Battle includes the major forces that fought across the era, allowing you to experience the strengths and weaknesses of both sides — from heavily armed western knights and determined infantry to fast-moving eastern cavalry and defenders fighting for cities and fortresses.

Siege Warfare and Frontier Conflict

The Crusades were not decided by open battle alone. Crusades: Book I captures the full nature of medieval warfare in the Levant and Anatolia, where strongholds, roads, and relief operations often mattered more than simple battlefield victory. Conduct detailed siege operations using Mangonels, Onagers, Ballistae, Trebuchets, Siege Towers, Battering Rams, and ladders to break fortified positions or defend them against assault.Fight across a harsh and contested landscape where:Cities and fortresses dominate operationsRoads, passes, bridges, and ridgelines shape every maneuverSupplies and frontage can decide the fate of an advanceA delayed relief force can doom a city, while ample supply can save defendersFrom the sieges of Nicaea, Antioch, Jerusalem, Tyre, Edessa, and Damascus to smaller clashes, marches, ambushes, and defensive stands, Crusades: Book I recreates the military realities of an era where every victory had to be held against inevitable counterattack.

74 Detailed Scenarios

Crusades: Book I includes 74 scenarios covering a wide range of actions and engagements, including:
  • A solo tutorial scenario
  • Five training scenarios
  • Historical battles
  • Variant scenarios
  • What-if scenarios
  • Specialized versions for both head-to-head play and play against the AI
The game covers major and lesser-known actions from across the 1st and 2nd Crusades and between, including battles such as:
  • Nicaea
  • Dorylaeum
  • Antioch
  • Ma'arat al-Numan
  • Jerusalem
  • Ascalon
  • Heraclea
  • Ramla
  • Acre
  • Harran
  • Tripoli
  • Tyre
  • Aleppo
  • Edessa
  • Ephesus
  • Damascus

Two Branching Campaigns

Two dedicated campaigns containing 23 scenarios allow you to follow the major events of the era through a connected series of battles and strategic decisions.Play through the First Crusade or the Second Crusade, from either the Crusader perspective or the Islamic alliance perspective. These branching campaigns allow player choices to shape the path forward, with strategic decisions influencing which scenarios follow and how the campaign unfolds.

Extensive Maps and Medieval Visual Detail

A range of historically accurate maps are included covering the major locations fought over during the 1st and 2nd Crusades, as well as lesser-known battlefields.The game also includes extensive 3D unit graphics representing the major armies of the era, bringing the crusading world to life on the battlefield.

Powerful Editing Tools

Customize and expand your experience with a full suite of editors, including:Campaign editorScenario editorSub-map editorUse these tools to modify existing content or create new medieval engagements of your own.

Multiple Ways to Play

Multiple play options include:Play against the computer AIPlay-By-Email (PBEM)LAN and live Internet playTwo-player Hot Seat mode

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended May 23, 2026
Introduction: I was introduced to Wargame Design Studio games in May of 2023, and it's been the most rewarding three years I've spent invested into their games; the gameplay, the level of research, watching them improve the software, and releasing new & exciting titles since. Formally known as John Tiller Software until Mr. Tiller's passing 2021. The team who continues his legacy now have just done incredible work, and I know that John would be extremely proud of their accomplishments. As a military history enthusiast, these games are incredible to play, plus they always encourage me to with researching various campaigns, characters, unit types, warfare practicalities, etc. When I first tried their games in 2023, I started off with the free demos such as American Wars: Little Big Horn, Napoleonic Battles: The Final Struggle, and Panzer Campaigns: Mius '43. It took time, but the Napoleonic Battles demo, The Final Struggle, is where it clicked for me. Later I tried the Panzer Campaigns demo, Mius '43, and absolutely fell in love with that too. Since then, I've been completely invested in all their works. I may not be able to tackle all the WDS games in this life, however, I know th…
6 found this helpful
Recommended May 24, 2026
Ignore my playtime, I purchased this and many other games from the developer from their site. They are made with significant attention to historical detail. The game play gets you reading about the historical events. Great developer and happy to support.
4 found this helpful
Recommended May 31, 2026
Extremely fun and easy to grasp war game with included tutorials and beginner's documentation. Has made a WDS fan out of me. Thank you.
3 found this helpful
Recommended Jun 14, 2026
a great game!
2 found this helpful
Recommended Jun 26, 2026
Only played a short time but loving all the time that went to making this game historically accurate. No problem getting used to the controls & a nice tutorial included in a pdf file. Recommended!!!
Recommended Jun 19, 2026
I have been playing these games for over 2 decades. WDS are the fairly new owners of the business and have constantly updated and improved older titles whilst also creating excellent new ones such as this, adding to an already extensive catalogue. There is not enough space to list all the good stuff on offer. If you are into this style of wargaming then you are in for a treat.

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