> For the complete documentation index, see [llms.txt](https://foe-helper.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://foe-helper.gitbook.io/docs/english/module/tech-tree.md).

# Technology (Tech) Tree

![Icon](/files/CLzQdktWHbC39YhpECil)

The **Technology Tree** module displays the total amount of resources needed to unlock all technologies up to a selected era. It is especially useful for planning resource needs across multiple future eras.

{% hint style="warning" %}
You must open the in-game Technology Tree in Forge of Empires before launching this module for data to load correctly.
{% endhint %}

## Menu Overview

![Menu Overview](/files/o9OaqNeLdIcfkJaMDkK2)

The layout of the Technology Tree module is composed of:

* A title bar with the [Configuration menu](#configuration)
* [Era Selection and Options](#era-selection-and-options)
* [Resource Requirements Display](#resource-requirements-display)

## Configuration

![Configuration Menu](/files/jVBc8bjMcVdPcBYjGLmz)

The configuration menu allows you to:

* Export the cumulative resource requirements to a `.csv` or `.json` file.
* Useful for planning outside the game or sharing with others.

## Era Selection and Options

This zone lets you control which era’s requirements are displayed:

* **Left button**: Go to the previous era
* **Right button**: Advance to the next era
* **Central label**: Displays the currently selected era

Checkboxes allow fine-tuning:

* **Ignore optional technologies of previous eras**: Excludes optional techs, of your in-game previous eras, from the total calculation
* **Ignore optional technologies of current/higher eras**: Excludes optional techs,of your in-game current/higher era, from the total calculation

## Resource Requirements Display

This section shows all required goods to unlock technologies:

* **Red numbers**: highlight missing goods
* **Green numbers**: surplus goods
* Totals include:
  * Costs from previous eras if progressing linearly
  * Full cumulative cost when advancing to future eras

{% hint style="success" %}
This module improves on the native FoE tech tree overview by showing total cumulative needs to reach selected era, not just for the specific era, helping you plan long-term.
{% endhint %}

## Usage

* Plan resource investments before entering a new era
* Anticipate potential shortages ahead of time
* Export requirements for guild sharing, tracking, or personal optimization

## FAQ

**Q: Why do I see goods from earlier eras?**\
A: If advancing multiple eras ahead, the module includes goods needed from all intermediate eras unless filtered out using checkboxes.

**Q: Do these totals match what I see in the in-game tree?**\
A: Not exactly, this module aggregates **all cumulative costs**, including optional technologies if not excluded manually.

**Q: Can I save this data?**\
A: Yes, use the Configuration menu to export in `.csv` or `.json` format.