Projects

City Projects are produced directly by a city, using its civics output per year. Projects are located within the city center tile and affect the overall yields of the city (in contrast to Improvements, which are built by Worker units on the map). The effects of completing a project may vary depending on nation and Archetypes of the Leader & Governor of the city. Most projects have stronger variants for every cultural level. Some projects are freely repeatable, others are permanent and cannot be produced again in the same city until it reaches the next cultural level.

Permanent projects

Permanent projects can only be done once. When a city reaches the next cultural level, it may produce the stronger variant of the project, replacing the effects of the previous one (i.e., when completing Treasury II a city gains a net of +10 per year).

Treasury

Treasury projects are mainly used to increase the city's money output. If playing as Babylonia, every treasury project also provides +2 per year in the city. If adopted Professional Army law, every treasury project also provides +2 per year.

Name	Requirements	Construction cost	Resources cost	Effects
Treasury I	Administration technology	40 civics	20 stone	+100 on completion +10 per year
Treasury II	Treasury I Developing culture	60 civics	40 stone	+200 on completion +20 per year
Treasury III	Treasury II Strong culture	80 civics	60 stone	+300 on completion +40 per year
Treasury IV	Treasury III Legendary culture	100 civics	80 stone	+400 on completion +80 per year +1 per year

Forum

Forum projects are mainly used to increase the city's civics output. If built The Acropolis wonder, every forum project also provides +0.5 per year in the city. If adopted Philosophy law, every forum project also provides +1 per year.

Name	Requirements	Construction cost	Resources cost	Effects
Forum I	Rhetoric technology	40 civics	20 stone	+20 on completion +1 per year
Forum II	Forum I Developing culture	60 civics	40 stone	+40 on completion +2 per year
Forum III	Forum II Strong culture	80 civics	60 stone	+60 on completion +4 per year
Forum IV	Forum III Legendary culture	100 civics	80 stone	+80 on completion +8 per year +1 per year

Archive

Archive projects are mainly used to increase the city's science output. If the Leader is a Scholar, every Archive project also provides +2 per year in the city. If adopted Gnosticism Theology, every Archive project also provides +2 per year.

Name	Requirements	Construction cost	Resources cost	Effects
Archive I	Metaphysics technology	40 civics	20 stone	+10 on completion +1 per year
Archive II	Archive I Developing culture	60 civics	40 stone	+20 on completion +2 per year
Archive III	Archive II Strong culture	80 civics	60 stone	+30 on completion +4 per year
Archive IV	Archive III Legendary culture	100 civics	80 stone	+40 on completion +8 per year +1 per year

Infrastructure Projects

Infrastructure projects are mainly used to increase the city's defence. For every completed project, the city center gains +10 maximum HP and +1 per year, if a Military unit of the same family is inside the city's borders.

Name	Requirements	Construction cost	Resources cost	Effects
Walls	Polis technology	60 civics	40 stone
Moat	Portcullis technology Walls	80 civics	60 stone	+25% City Defense
Towers	Martial Code technology Moat	100 civics	80 stone	+25% City Defense +1 maximum Range for ranged units

Found Religion

The Found Religion project is available for all Clerics cities at Developing culture level, but it can only be built once per player.

Name	Requirements	Construction cost	Resources cost	Effects
Found Religion	Clerics family Cultural level: Developing	60 civics		Found a World Religion

Other Permanent Projects

There are unique projects that cannot be enabled through the technology tree, but rather through certain Events. These projects are automatically installed in the city, without investing time and resources.

Name	Required Event	Effects
Consular Tribune	The Fighting Class	-1No Icon Found per turn +10% per turn -10% per turn
Merchant Town	Merchant Town	+20% per turn -10% per turn
Sword Cult	Mysterious Sword	+2 per turn
Sword Cult Tithe	Mysterious Sword	+10 per turn
Confucism	?	?
Child Labor	?	?

Repeatable Projects

Repeatable projects may be produced by the same city more than once before it reaches its next cultural level (enabling the stronger variant of the project). Permanent effects from the different tiers of these project (excluding Council & Decree) stack, in contrast to Permanent projects which replaces the effects of the previous tier. Repeatable projects cost no resources to produce.

Council

Council projects are different in that they always take 1 turn to build and their effects (increase in civics & money output) last only for one turn.

Name	Requirements	Construction cost	Effects
Council I	Cultural level: Weak		+40% for 1 turn +40% for 1 turn +40% for 1 turn
Council II	Cultural level: Developing		+60% for 1 turn +60% for 1 turn +60% for 1 turn
Council III	Cultural level: Strong		+80% for 1 turn +80% for 1 turn +80% for 1 turn
Council IV	Cultural level: Legendary		+100% for 1 turn +100% for 1 turn +100% for 1 turn

Festival

Festival projects are used mainly to battle discontent and increase growth.

Name	Requirements	Construction cost	Effects
Festival I	Cultural level: Weak	40 civics	+20 and +20 on completion +1 per turn
Festival II	Cultural level: Developing	60 civics	+40 and +40 on completion +1 per turn
Festival III	Cultural level: Strong	80 civics	+60 and +60 on completion +1 per turn
Festival IV	Cultural level: Legendary	100 civics	+80 and +80 on completion +1 per turn

Inquiry

Inquiry projects are available in cities with a governor of the Scholar Archetype. They are used mainly to increase the science output in a city.

Name	Requirements	Construction cost	Effects
Inquiry I	Cultural level: Weak	80 civics	+40 on completion +1 per turn
Inquiry II	Cultural level: Developing	120 civics	+80 on completion +1 per turn
Inquiry III	Cultural level: Strong	160 civics	+120 on completion +1 per turn
Inquiry IV	Cultural level: Legendary	200 civics	+160 on completion +1 per turn

Hunt

Hunt projects are only available in the Family Seat of a Hunters type family and are used mainly to increase the food output in a city.

Name	Requirements	Construction cost	Effects
Hunt I	Cultural level: Weak	40 civics	+100 on completion +1 per turn
Hunt II	Cultural level: Developing	60 civics	+200 on completion +1 per turn
Hunt III	Cultural level: Strong	80 civics	+300 on completion +1 per turn
Hunt IV	Cultural level: Legendary	100 civics	+400 on completion +1 per turn

Decree

Decree projects are only available in the Family Seat of a Statesmen type family or in the capital city, if adopted Constitution law. They are used to increase the orders output in a city for a single turn.

Name	Requirements	Construction cost	Effects
Decree I	Cultural level: Weak	40 civics	+3 on completion
Decree II	Cultural level: Developing	60 civics	+6 on completion
Decree III	Cultural level: Strong	80 civics	+9 on completion
Decree IV	Cultural level: Legendary	100 civics	+12 on completion

Convoy

Convoy projects are only available if adopted Trade League law. They are used mainly to battle discontent and increase money output.

Name	Requirements	Construction cost	Effects
Convoy I	Cultural level: Weak	40 civics	+100 and +40 on completion +1 per turn
Convoy II	Cultural level: Developing	60 civics	+200 and +60 on completion +1 per turn
Convoy III	Cultural level: Strong	80 civics	+300 and +80 on completion +1 per turn
Convoy IV	Cultural level: Legendary	100 civics	+400 and +100 on completion +1 per turn

Olympiad

Olympiad projects are only available for Greece. They are used to increase training output.

Name	Requirements	Construction cost	Effects
Olympiad I	Cultural level: Weak	40 civics	+50 on completion +1 per turn
Olympiad II	Cultural level: Developing	60 civics	+100 on completion +1 per turn
Olympiad III	Cultural level: Strong	80 civics	+150 on completion +1 per turn
Olympiad IV	Cultural level: Legendary	100 civics	+200 on completion +1 per turn