Basics:

Each task is resolved by a roll of 2 or more d10. The goal is to find matches. The higher the matches, the better. The more dice in the match, also the better. The value on the dice of a match is the match's Height. The number of dice in the match is its Width. For instance, if 3d10 turns up 7, 7, 3, there is one match (the two 7's). The Width of the match is 2, the Height is 7. This can be written shorthand as 2x7. In this system, singles are discarded (in the above example, the 3 is discarded).

For simple tasks, any match creates a success. For difficult tasks, a match of a minimum Height may be required.

If the roll is opposed by another faction, the defender has a couple of options for defense.

The first is to roll for Gobble Dice. All matches are grouped together, and each dice can be used to knock out one dice of equal or lesser value in the attacker's matches. If an attacker's match is reduced to just one dice, it is eliminated. However, the defender can still use the last dice of a pair when used as Gobble Dice.

Example 1:

Portsdale attacks Eastdale. For this attack, Portsdale has 5d10 and Eastdale has 3d10. Eastdale decides to hunker down and do a full defense - it is rolling for Gobble Dice.

Portsdale rolls 1, 3, 3, 8, 8 - getting a 2x3 and 2x8, with a 1 being discarded.

Eastdale rolls 5, 9, 9 - getting a 2x9 for Gobble Dice and discarded the 5.

Eastdale uses one 9 to knock out an 8 - changing the 2x8 to a 1x8, eliminating that success. Eastdale still can use its other 9 as a Gobble Dice, which it does, knocking out one of the 3's, eliminating Portsdale's other success. Eastdale managed to thwart the attack.

Example 2:

Using the above scenario, if Portsdale instead rolled a 1, 5, 5, 5, 5, it would have a 4x5. If Eastdale still had a 2x9 for Gobble Dice, it could reduce the 4x5 to a 2x5 - which still succeeds.

Example 3:

Instead, let's change Portsdale's rolls to 1, 3, 3, 0, 0 - now, Portsdale has a 2x3 and a 2x10. Eastdale's 2x9 Gobble Dice can only affect matches with a smaller Height, so Eastdale can still knock out the 2x3, but the 2x10 is not affected, and Portsdale still has a successful match.

The second option is called a dynamic contest in the ORE system. The defender is not hunkering down to soak the attack, but is instead counter-attacking. In this case, both attacker and defender roll their dice pools. The side with the widest roll goes first. If both sides have the same width, the Highest roll goes first, if both are tied in height as well, flip a coin.

I have not made sense of how this is resolved: "the Widest and Highest roll resolves first and knocks a die out of a set on the other side." Does this mean each match can knock out a single die, or does it act like Gobble Dice, where each DIE knocks out an opposing die?

Actions:

The summary of actions that a company can do is available in PDF form on the Reign website, here (pdf file).