Portugal
João III
Uniques and adjacency effects read from the game data.
Victory focusScienceCulture
Kit at a glance
João III trades with the world — and profits enormously for it: Portugal's international routes are limited to coastal destinations but far richer, navigation schools pump Great Admiral and Great Scientist points, and feitoria trading posts extract wealth from every partner's coast.
Opening: the first 60 turns
Portugal must start on the coast, so if the capital spawn is inland, walk one or two turns to reach water before settling. The first fifty turns are about contact: Scout, then a second Scout, then Settler, and Sailing early enough that a Galley is exploring the coastline by turn 20. João III's units see farther, which makes that Galley find city-states and rival capitals a full era before anyone else. Foreign Trade is the mandatory first civic because the Trader is the actual economy; send it to the richest coastal city you have met, not the closest. Keep every early city within reach of the ocean, aim Writing and Currency as the second and third techs, and delay the Campus until Education, when the Navigation School replaces the University and pays back all the naval investment at once.
Unique to this civilization
Unit
Nau
Replaces Caravel
Technology: Cartography
Building
Navigation School
Replaces University
Technology: Education
Adjacency effects
No adjacency bonus — standard district rules apply.
How to play it
Meet every coastal civ fast — routes need harbors within reach, so scout the seas hard. Plant feitorias at every partner city and watch route yields balloon. Portugal wants a watery map; on one, it may be the strongest economy in the game.
Victory paths
Science is the default finish because the Navigation School folds Great Admiral points and extra science from coastal geography into every Campus city, and international routes to advanced partners keep Portugal from ever falling behind in techs. The economy is large enough that a culture pivot is also realistic: gold buys the Theater Square buildings other civs have to hard-build, and the same trade routes that feed science also spread tourism pressure to every partner. Domination is possible on a naval map, using Naus and the extra Great Admirals, but the kit gives no land-combat bonus, so coastal cities are the only practical targets. Whichever route, the tell is the Renaissance: if Portugal is not already ahead in techs when Cartography lands, the routes were sent to the wrong partners.
Synergies: city-states, wonders, policies
City-states that feed a coastal trade economy are the priority: Auckland's suzerain bonus gives production on shallow water in every coastal city, Antananarivo and Hunza pay per Great Person or route, and Nan Madol turns coastal districts into culture. The Great Lighthouse and Colossus are the two wonders that matter early, both cheap for a civ whose Harbors are already being built, and Kilwa Kisiwani later. Reyna is the star governor, with the promotion that lets her buy districts with gold. Policy cards to keep rotating: Trade Confederation for routes to foreign cities, Maritime Industries for the early fleet, and Triangular Trade once faith is useful. God of the Sea is the pantheon if fishing boats are plentiful; otherwise take whatever the capital's terrain favors, since Portugal's religion game is a side dish.
Weaknesses and counters
Portugal's international routes only reach coastal or Harbor cities, so a Pangaea map with mostly inland rivals shrinks the whole kit to a handful of destinations, and a landlocked start is close to unplayable. Opponents exploit this by pillaging Harbors and sinking Traders, which hurts João III more than any other leader because his economy rests on those foreign routes. War with the trade partner also cuts routes immediately, so a hostile neighbor who declares early can starve the economy before the Nau exists. Common mistakes include building the Feitoria on tiles with no route attached and sending Traders to the nearest city instead of the one that returns the most resource-based yields.
Similar civilizations
Related guides
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Last reviewed: 2026-10-03