Twilight's Fall – a separate game. Twilight Imperium's expansions, mods and rules topics are not part of it.

Modifiers

LRR §56

Rules Reference

A modifier is a number that is applied by an ability to increase or decrease the attribute values of a unit or the results of a die roll.

  • 56.1A modifier is always preceded by the word “apply” followed by a numerical value.

  • 56.2A modifier value preceded by a ”+” is added to the attribute or result being modified; a modifier value preceded by a ”-” is subtracted from the attribute or result being modified.

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  • “Combat roll” modifiers do not modify anti-fighter barrage, bombardment or space cannon rolls.

  • When an effect moves a unit to an adjacent system, modifying that unit’s move value will have no effect.