EarthRoyale

EarthRoyale is an observer map simulation. Each turn, representing a few in-game months, the game selects an event that changes the world map or adds lore to the countries of a historic or future world. Without downloaded scenarios, the base game uses a modern-day de facto map, where each province belongs to the country that actually controls it, with some exceptions for rapidly changing situations.

Customize the map

Before starting, you can adjust the world and the events that shape it. The game includes a paint mode for making your own maps, and you can download maps from the Steam Workshop. You can also:

• Enable or disable continents.
• Turn off normal countries, leaving only the cities or provinces you have enabled.
• Make provinces, cultures or Easter eggs independent from the start.
• Set the percentage chance of each event, or choose one of the preset event modes.

Events

Each turn can bring one of many changes to the map:

• Division: a random country is divided, with each province given to the closest other country.
• Annexation: a random country is given to a bordering country, or to the closest country if it has only coastal borders.
• Shrink or expand: a random country takes nearby provinces or gives away up to 75% of its provinces to the closest other country for each province.
• Take coast or islands: a country takes the coast or islands of a neighboring country.
• Partition: a country with more than 200 provinces is divided in different ways by major powers, defined as countries with more than 50 provinces. The major powers take some areas, some gain independence, and the rest are divided among the closest countries.
• Colonization: a random coastal country takes a coastal province from another country. If unclaimed coastal provinces are available, the game prioritizes them over claimed ones.
• Independence: Easter eggs, provinces, cultures or former country tags within a random country may gain independence, along with all provinces in that country that share the relevant tag.
• Nuke: a random province is selected, and provinces around it within three circles of different sizes become Wasteland, Unclaimed and Fire, from the smallest circle to the largest.
• Collapse: all provinces in a random country become unclaimed, with a chance that multiple province, culture or former country tags within it gain independence.
• Union: two countries join to form a new country named “country1 - country2.” A union can join with another union or a normal country.
• Culture union: three or more countries with a similar culture join under a special name.
• Split: a country divides into north and south, or east and west. If it is a union, its member states become independent as they were when they joined; provinces outside those states are divided among the former members according to which is closest.
• Flood: a random province becomes flooded or water, and the flood spreads to one or two closest provinces at a time, for up to 15 provinces.
• Fire: a fire starts in a random province.
• Hurricane: a hurricane forms along a coast and moves randomly, destroying every province in its path.

Province types

Provinces can have different ownership and environmental states. Normal or claimed provinces belong to a country, use its randomly generated color and are the only provinces affected by events. Unclaimed provinces have no owner and are light brown; each turn, they have a chance of being claimed if one of the three closest provinces is claimed. Wasteland is darker brown, cannot be claimed and, when generated by the game rather than the map editor, becomes unclaimed after a few turns.

Flooded provinces are dark blue like the ocean. Their flood level decreases each turn, starting lower the farther they are from where the flood began; when it reaches zero, the province becomes unclaimed. Fire provinces are orange: each turn, fire moves to another province and loses strength, or splits into two fires with half its strength. When its strength reaches zero, it dies out, and each province it leaves becomes unclaimed. “None” marks a province that does not exist, such as one removed by disabling its continent before a game.