Rules: WWI

De Bellis Horribilis WWI Rules

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De Bellis Horribilis is a set of free wargames rules for The Great War based on DBA.

Fokker Fodder

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Fokker Fodder is a set of free wargames rules for World War One aircraft battles. The rules are designed for both single battles, and for campaigns.

To End All Wars – WWI Wargames Rules

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To End All Wars is a set of free wargames rules for squad-based WWI miniatures games. The authors write:

To End All Wars is a miniature game that attempts to accurately recreate the First World War. Players control teams which have different roles in combat. They use a combination of teams to take positions on the battlefield and force their enemy from the trenches.

Knights of the Sky WWI Aircraft Rules

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Knights of the Sky is a set of free wargames rules for WWI Aircraft.

Goodbyeee! WWI Skirmish Rules

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Goodbyeee! is a set of free wargames rules for Great War skirmish actions.