Geneva

Strategy guide

+15% Science in every city as long as you are at war with no one. The discipline it demands is real: one declaration — yours or theirs — switches it off. Pair it with strong defenses and defensive alliances so aggressors cannot casually delete your bonus.

Best civs & plans

Peaceful science civs — Korea and Scotland — get the most; strong walls or intimidating armies keep the bonus alive. Poor fit for domination plans by definition.

Envoy plan

Geneva is the scientific city-state where the suzerain effect dwarfs the ladder, so aim for three envoys early and hold them for the entire game; the Library and University tiers are a welcome extra rather than the reason to be here. Because the percentage applies to every city, it is worth more to a peaceful empire than any other single city-state, and the AI knows it — science leaders pile envoys in, and a bare three is lost by the medieval era. Budget five, use Amani here if anywhere, and consider six since the Research Lab tier lands in the same cities that profit most. Redirect envoys from militaristic city-states you will not use in a peace game. Domination players should send exactly one envoy for the Library bonus and never think about it again.

Value by era

The percentage is worth exactly as much as your Science output, so in the ancient era it is a point or two, the same as a single Library. It becomes a serious asset in the classical and medieval eras once Campuses and Universities push output into the dozens, and most decisive in the Renaissance and industrial eras, when the tech race for Industrialization and Scientific Theory is measured in a handful of turns and a fifteen-percent edge is two or three of those turns per tech. Late game it remains large in absolute terms and matters for the space-race tail, though by then Research Labs and Great Scientists dominate. Unlike most percentage bonuses it never fades; the only decay is political, as the chance of being dragged into a war grows with every civ you meet.

Pitfalls and how to protect it

The condition is no war with any civilization, and it does not care who started it: an accepted joint war, an emergency you join, or a surprise declaration from a neighbour all switch it off. Wars against city-states and barbarians do not count. Treating a formal war that never sees a battle as harmless is the common mistake — every turn costs the percentage, so sign a white peace once the ten-turn minimum allows. Keep a visible army and walls on the border so AI threat assessment stays low, and sign defensive pacts. If Geneva itself is attacked, that is its war, not yours, so levying its units to help it survive does not break the condition. If captured, liberate only if the war will be short; a long campaign costs more Science than the bonus returns.

Envoy bonuses

• 1 envoy+1 Science in your capital and in each Library you own.
• 3 envoys+2 Science in each University and each Consulate you own.
• 6 envoys+3 Science in each Research Lab and each Chancery you own.

Envoy bonuses are shared by every city-state of the same type.

Other Scientific city-states

• Anshan
• Bologna
• Fez
• Hattusa
• Nalanda
• Mitla
• Taruga

Related guides

• City-States and Envoys: Where Your Influence Should GoWhere envoys come from, how to spend the first handful, which city-state types match each victory plan, how to win and keep suzerainty against the AI, and when conquering a city-state is the right call.Last reviewed: 2026-10-03
• Diplomatic Victory: Earning and Spending FavorA working plan for the Gathering Storm diplomatic victory: where Diplomatic Favor actually comes from, how World Congress sessions and votes turn into victory points, which emergencies, competitions and wonders matter, how to keep alliances alive, and when to spend favor versus hold it against a rival's lead.Last reviewed: 2026-10-03
• Early District Planning: The First 100 TurnsHow to read city sites for future adjacency, decide between settling for yields now or reserving tile clusters, and know when a planned layout should be abandoned.Last reviewed: 2026-10-03