Relation bonus

When interacting with other space faring creatures or nations during the space stage or civilization stage, the player will have a dynamic relationship with them, indicated by a scale from Red (furious), to Orange (annoyed) to Yellow (cautious) to Blue (polite) to Green (gracious). The rating on this scale may by certain actions or even simply by the player's choices in previous stages.

You can get any of the following modifiers up to a given maximum, meaning when you are at the maximum modifier for it then the relation will not improve or worsen even if you continue repeating it.

Most relation modifiers will return to default over time, so the player will have to keep active for some of them to keep them up. Only a few are static and will remain over time. For example, if the player starts a war with an empire and later signs peace with them, the player may lose the uplifted bonus.

All modifiers from the different groups are then added up and the resulting value is your total relation bonus to them. Note that Wanderers in space partially act like Diplomats, and Knights act like Warriors when talking to them, and when applying relation bonuses.

Positive Relation Modifiers

 * You're a Religious/Economic Nation. (Some nations like a specific nation type, although no nations like Military nations)
 * You fought our enemy. (A useful modifier. Sometimes when you are fighting an enemy, some nations will start to like you.)
 * Your Gifts. (Earned by giving gifts to other nations, caps at +120.)
 * Your Compliments. (Earned by giving a compliment to a nation.)
 * You were generous. (Earned by giving a great deal on a city when buying it.)

Negative Relation Modifiers

 * You're a Religious/Economic/Military Nation. (Some nations don't like your nation type, especially if you are Military)
 * Your Religion. (Earned by attacking religiously)
 * You attacked us. (Earned by attacking militarily or using a bomb-like super weapon)
 * You were cheap. (Earned by giving a bad deal on a city when buying it)
 * You broke a deal. (Earned by stopping a trade route)
 * Your insults (Earned if you insult a nation)
 * Your Nation is too big. (Earned when you have a large nation compared to theirs)
 * Your borders are too close. (Earned if the complaining nation is not allied and your borders are touching theirs)
 * Used Nuclear Weapons (Earned by using the Gadget Bomb or the ICBM.)
 * You declared war (Earned when you consent to your allies to attack a nation)

Positive Relation Modifiers

 * Helping our planet: Up to +100 (Gained for raising the T value of a planet.)
 * You completed missions: Up to +100 (Gained by doing missions for the creature.)
 * Your gifts: Up to +50 (Gained by giving gifts.)
 * We created an alliance: Up to +50 (Gained by signing an alliance.)
 * (*) You uplifted us: +50 (Gained for uplifting the race from pre-space age to space age using a Monolith)
 * Using friendly tools: Up to +50 (Gained for using the happy ray or fireworks on a city of the creature.)
 * Your embassy: Up to +50 (Gained by placing an embassy on the planet.)
 * A generous peace offering: Up to +50 (Gained by offering more then you would have to, to sign a peace agreement with a race.)
 * Our Trade Route: Up to +30 or +40 depending on the beliefs of the creature you have a trade route with. (Gained by signing a trade route and keeping it up over time.)
 * You were generous: Up to +44 (Gained by buying planets from the creature for more then they are worth)
 * (*) We like new acquaintances: +30 (Gained if the creature you meet follows Prosperity or Order.)
 * We value your friendship: Up to +100 (Gained when the creature gives you a gift.)
 * Your trading: Up to +15 or +20 (Gained for trading items in the trading window.)
 * You agreed to help Us: Up to +10 (Gained for accepting the first mission a creature offers.)
 * (*) Gracious Greeter Superpower: +10 (Gained for choosing the green friendly path in the tribe phase.)
 * (*) We think alike: +10 (Gained when you and the target creature share the same belief.)
 * (*) You introduced yourself: +10 (Gained for introducing yourself in a friendly way, before they think you are ignoring them.)

(*) Doesn't diminish.

Negative Relation Modifiers

 * Breaking the Galactic Code: Up to -200 (Gained by breaking the Galactic Code.)
 * Allied with Grox: Up to -200 (Gained by creating an alliance with the Grox, this is instant and affects all other races.)
 * You broke our alliance: Up to -125 (Gained by first creating an alliance, then severing it.)
 * Destroying our buildings: Up to -100 (Gained by destroying creatures buildings.)
 * Destroying our spaceships: Up to -100 (Gained for destroying creatures spaceships.)
 * Captured one of our systems: Up to -100 (Gained when you take over creatures system using hostile actions.)
 * Using harmful tools: Up to -100 (Gained for shooting at the planet with harmful tools like a laser or planet artist tool.)
 * Hurting our planet: Up to -100 (Gained for negative Terraforming or for failing to do a eco damage mission they ask of you and letting their planet die.)
 * You refused to pay us tribute: Up to -100 (Gained for failing to pay tribute when creature demands it.)
 * War: -50 (Gained when creature declared war on you.)
 * Your failed missions: Up to -50 (Gained for failing the mission.)
 * Abducted our citizens: Up to -50 (Gained for taking creatures citizens from their cities to your ship.)
 * Scaring our citizens: Up to -50 (Gained when shooting at citizens, placing crops circles.)
 * We were at war: Up to -33 (Gained when you first were at war, but the creature you fight offers peace to you.)
 * (*) We distrust strangers: -15 or -30 (Gained if the creature you meet follows Force or Faith; this is -70 for the Grox.)
 * Stole our resources: Up to -30 (Gained for taking objects like spice crates or artifacts the from creature's planet.)
 * You aborted missions: (Gained when you accept a mission and then cancel it.)
 * You rejected missions: (Gained when you reject a mission when it is offered to you.)
 * (*) You introduced yourself: -10 (Gained for introducing yourself in a hostile way, before they think you are ignoring them.)
 * Pushed too far
 * You avoided contact: -15 (When you ignore the hails of the creature or pass over their territory without contacting them.)
 * You were cheap: (When you make a to low offer for the system buying after a trade route was full.)
 * Flood City (When you use atmospheric tools to destroy a city.)
 * Bad Peace Offer: (When you make a too low offer for getting a peace treaty.)
 * Failing to protect our ships: (When you let the UFO of your ally be destroyed.)
 *  Casusing Extinction: (When you lower the T score from T1 to T0 and animals and plants disappear.)
 * Your presence disturbs us: -10 (Just a bonus that diminishes fast, after a Warrior Empire contacts you, or you contact a Shaman Empire that is at war with you, doesn't happen with Most other archetypes)

(*) Doesn't diminish.

Positive relation modifiers for the Grox

 * Broke Galactic Code: caps at +50
 * You completed missions: caps at +50
 * Using friendly tools: caps at +30
 * Our Trade routes: caps at +30
 * We created an alliance: caps at +25
 * Your gifts: caps at +10
 * Your embassy: caps at +10
 * Gracious greeting superpower caps at +10 (only if player is was a friendly tribe)
 * You agreed to help us caps at +5

Relation Bonus Reset
There are but a few ways to completely reset the Relation Bonus back to initial values.
 * Ending a war by signing a peace treaty, the one you buy from your opponent empire for cash.
 * Soothing Song, the unique ability of the Bard. For a short period of time this ability artificially changes a relationship score to zero.  It does not remove relationship modifiers.  After Soothing Song expires the relationship score will change to what it was before plus whatever changes made by the player during the time Soothing Song was active.

Ending it by signing a peace treaty will remove any and all positive and negative bonuses apart from the ones that are natural for the race, like 'We distrust strangers'. Even 'Allied with Grox', 'Breaking the Galactic Code', all is forgiven.

Effect
Based on your relation you can have hostilities or war, set up a trade route (blue face) an alliance (green face). Also the price to repair and recharge is based on relation. N.B. The trade prices are unaffected however.