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Open Borders in Civilization VI: A Comprehensive Guide

The short answer is no, open borders are not permanent in Civilization VI. While it may sometimes feel that way, especially when you’re trying to wrangle a stubborn AI, open border agreements are typically set to expire. This article explores the intricacies of open borders in Civilization VI, delving into their mechanics, benefits, drawbacks, and strategies, ensuring you can master this crucial diplomatic tool.

The Nuances of Open Borders

Open borders in Civilization VI are a diplomatic agreement allowing units from different civilizations to freely move through each other’s territories without incurring a declaration of war. This agreement is initiated through diplomatic negotiation and typically lasts for a predetermined number of turns.

Default Duration

By default, an open borders agreement in Civilization VI lasts for 30 turns on standard speed. This duration can vary if you’re playing on a different game speed (e.g., Epic or Marathon). Once those 30 turns are up, the agreement automatically expires, and borders revert to their default closed state.

Renegotiation and Expiration

After the initial 30 turns, you’ll need to renegotiate the open borders agreement if you wish to continue it. If you fail to do so, or if one party declines, the agreement lapses, and the borders close. This closing of borders can sometimes catch players off guard, especially if they’ve grown accustomed to using the other civilization’s territory for strategic movement or resource access.

Closing Borders Early

There isn’t a straightforward “cancel” button for open borders agreements. This is a common point of frustration for players. The primary ways to end an agreement prematurely are:

Declaring War: Declaring war on the civilization immediately cancels all diplomatic agreements, including open borders. This is obviously a drastic measure with significant consequences, but sometimes necessary if you need to immediately restrict access to your territory.
Waiting for Them to Declare War: If the AI declares war on you, the open borders agreement is automatically terminated. However, relying on this strategy means relinquishing control of the situation.

Strategic Considerations

Open borders aren’t just about allowing passage; they have several strategic implications.

Tourism Boost: Open borders provide a significant boost to tourism output. The visiting civilization receives a 25% bonus to tourism generated towards the host civilization. If you’re pursuing a cultural victory, carefully managing open borders is crucial.
Exploration and Scouting: They allow for easier exploration of the map and scouting of potential city locations or barbarian camps.
Trade Route Access: Open borders can provide shorter and safer routes for your trade caravans, increasing their yield and efficiency.
Military Positioning: Open borders, while beneficial, can also be a risk. The AI can position units dangerously close to your cities, potentially launching a surprise attack.

Frequently Asked Questions (FAQs)

Here are 15 frequently asked questions about open borders in Civilization VI, designed to address common player concerns and strategies.

How do I initiate an open borders agreement?

You initiate an open borders agreement through the diplomacy interface. Select the leader you wish to negotiate with, and if they are amenable, the option to propose an open borders treaty will be available. You’ll need to have met the civilization and established basic diplomatic contact.
What are the prerequisites for an open borders agreement?

Generally, you need a positive or at least neutral relationship with the other civilization. Being at war or having severely strained relations will typically prevent an agreement. Factors such as shared government, trade agreements, and positive diplomatic modifiers can improve your chances.
Does an open borders agreement automatically renew?

No, open borders agreements do not automatically renew. Once the initial 30 turns (on standard speed) are up, you must renegotiate the agreement to continue it. You’ll typically receive a notification when an agreement is about to expire.
Can I cancel an open borders agreement before it expires?

Short of declaring war, there is no direct “cancel” button. The agreement will naturally expire after its set duration. The lack of a cancel button can feel frustrating.
What are the downsides of granting open borders?

The primary downside is the potential for the AI to use your territory for military positioning. This can leave you vulnerable to surprise attacks or allow them to scout your cities and defenses. It’s crucial to monitor the AI’s unit movements.
How does open borders affect tourism?

Open borders provide a 25% bonus to tourism generated towards the civilization with whom you have the agreement. This is a significant boost for cultural victories and makes open borders a key diplomatic tool for culture-focused players.
Do open borders affect trade routes?

Yes, open borders allow your trade routes to travel through the other civilization’s territory. This can create shorter, safer routes, increasing the yields and efficiency of your trade.
What happens if a city-state has open borders with me?

If you are the suzerain of a city-state or have the Gunboat Diplomacy policy card slotted, you automatically have open borders with that city-state. This allows you to move your units through their territory freely, which can be useful for defense or strategic positioning.
Can I have open borders with multiple civilizations at the same time?

Yes, you can have open borders agreements with multiple civilizations simultaneously. This can significantly boost your tourism output and trade opportunities, but it also increases the risk of military incursions from multiple sources.
Does the AI always accept open borders agreements?

No, the AI’s willingness to accept an open borders agreement depends on their attitude towards you, their agendas, and the overall diplomatic climate. A warmongering civilization might be hesitant to grant open borders, while a friendly civilization is more likely to agree.
How does my government type affect open borders agreements?

Certain government types and civics can influence the AI’s willingness to grant open borders or provide diplomatic bonuses that make it easier to negotiate such agreements. Autocracies, for example, may find it harder to secure agreements compared to Democracies.
Is there a way to see how long my open borders agreements have left?

Yes, you can view the duration of your active diplomatic agreements, including open borders, in the diplomacy overview screen. This screen provides a list of all active agreements and their remaining duration in turns.
What strategies can I use to maximize the benefits of open borders?

Focus on building strong relationships with civilizations that share your goals or are geographically convenient for trade routes. Prioritize open borders with civilizations that have high tourism output if you are pursuing a cultural victory. Always monitor the movements of their military units.
How can I protect myself from the risks of open borders?

Maintain a strong military presence and be vigilant about scouting. Position your units strategically to defend your cities and prevent the AI from gaining a military advantage. Be prepared to close your borders or declare war if necessary.
Where can I learn more about Civilization VI strategies and mechanics?

There are many online resources available, including forums, wikis, and YouTube tutorials. A great resource is the Games Learning Society, which explores games and learning through research and community engagement. Visit GamesLearningSociety.org for more information.

Conclusion: Mastering the Art of Open Borders

Open borders in Civilization VI are a powerful diplomatic tool that can significantly impact your game. Understanding their mechanics, benefits, and risks is essential for successful gameplay. By carefully managing your diplomatic relationships, monitoring your borders, and adapting your strategies, you can leverage open borders to achieve your victory goals. Whether you’re aiming for a cultural triumph or a strategic advantage, mastering the art of open borders is a key step toward dominating the world stage.

Is open borders permanent Civ 6?