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Requested by the fans, Heir to the Throne is the third expansion to the preeminent historical ...

Requested by the fans, Heir to the Throne is the third expansion to the preeminent historical strategy game Europa Universalis III. The expansion takes the hugely successful game beyond Complete, with improvements across the board.

Intriguing Casus Belli system, where wars have specific goals from start to finish.
Monarchs now belong to dynasties, with far reaching effects on the diplomatic model.
More involving and powerful Holy Roman Empire and Papacy options.
Special diplomatic options for Republics.
Set your National Focus in a province to enhance growth and strengthen your hold in the region.
Permanent Terra Incognita removed and replaced with impassable regions.
Cultural Tradition allows better advisors in the same way that Military Tradition allows better generals and admirals.
Many other additions and improvements.

NOTICE: This content requires the base game Europa Universalis III: Divine Wind on Steam in order to play.

Minimum Requirements:

OS: Windows XP/2000/Vista
Processor: 1.9Ghz Intel Pentium 4 or similar AMD
Memory: 512MB RAM
Graphics: 128MB, Vertex- and Pixelshader 2.0 support
DirectX®: DirectX 9.0c
Hard Drive: 1GB of free space
Sound: DirectX compatible soundcard

要激活您收到的Steam密钥，请按照以下说明进行操作；

1. 首先，打开Steam客户端。（如果没有，请点击此处的“安装Steam”按钮 => Steam Store）
2. 登录您的Steam帐户。（如果没有，请点击此处创建一个新帐户 => Steam Account）
3. 点击客户端底部角落的“添加游戏”按钮。
4. 然后，选择“在Steam上激活产品...”
5. 在窗口中输入或复制粘贴您从Voidu收到的激活码。
6. 您的游戏现在在您的库中可见！点击“库”。
7. 最后，点击游戏并选择“安装”以开始下载。