1. New Vegas
Opinion is tracked on two scales, one positive and one negative. These are combined to give an overal opinion score.
2. Crusader Kings
Opinion is tracked on a single scale, with positive and negative values. These are summed up to give an overall opinion score. Modifiers can decay over time.
2.1. Reputation
An opinion modifier comes from character
Reputation.
2.2. Party Members
Additional opinion modifiers can come from the opinion and
Reputation of characters the player is in a party or otherwise associated with.
