Casus Belli

Casus Belli is a politics and diplomacy mod built around player-run empires.

Create or join an empire, form political parties, win elections, pass laws through the senate, make alliances and negotiate with other nations — or lead your empire into war.

Features

Custom Empires — Create empires with their own name, tag and colour.

Diplomacy System — Relations progress from Peace → Tension → Imminent War → War.

Alliances — Form alliances, answer calls to arms and choose who you support.

Wars & Peace Treaties — Declare wars and negotiate treaties involving every nation in the conflict.

Political Parties — Create parties with their own ideology, colour and leadership.

Elections — Governments are elected for limited terms.

Senate & Laws — Players can propose and vote on laws.

Reputation — Political actions affect how easy it is for a government to pass legislation.

Autocracy & Censure — Powerful governments can become autocratic, while opponents can attempt to remove them.

Historical Records — Wars, alliances, treaties, elections and major political events are recorded automatically.

Most features are available through in-game menus:

G — Empires, diplomacy and alliances
L — Senate and laws
P — Parties, elections and parliament

Casus Belli is highly configurable through config/casusbelli-server.toml: diplomacy rules, reputation values and permissions.

Languages: English and European Portuguese.

Discord: https://discord.gg/WREpYVff