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

# What is ClickEm?

What ClickEm is, what the Clicker server setup includes, and how the game works from a player's and an owner's point of view.

**ClickEm** is a click-to-kill simulator for Minecraft servers. Players click mobs to earn Coins, use the Coins to grow stronger, and climb through zones and worlds. It is built as a **plugin (ClickEmCore)** and sold together with a complete, ready-to-run **server setup** called **Clicker**.

### The player's loop

```mermaid
flowchart LR
    A[Click mobs] --> B[Earn Coins, Essence, drops]
    B --> C[Buy Upgrades, Gear, Artifacts, Skills]
    B --> D[Hatch Eggs: Pets]
    B --> E[Unlock the next Zone]
    E --> A
    C --> A
    D --> A
    E --> F[Defeat the World Boss]
    F --> G[Rebirth: permanent bonuses]
    G --> A
```

1. The player clicks a mob. **Auto-attack** keeps hitting, and clicking faster builds **Fury** for spells (**Abilities**).
2. Kills pay **Coins** (spend on Upgrades, Gear, Zones, Eggs), **Essence** (Artifacts and Abilities), and drop **Echoes**, **Pet tickets** and more.
3. **Pets** float behind the player and add stats. **Echoes** set the player's element, which decides matchups against each mob.
4. **Zones** unlock one by one. After a world's zones, a **boss** guards the way. Beating it (three times) lets the player **Rebirth** and enter the next world.
5. Five **worlds** of 24 zones each, with daily **Quests**, **Achievements**, a **Season Pass**, **Events**, **Clans** and a **Gems Shop** around them.

### What you get

| Layer                        | What it is                                                                         | Where it is documented                                                                 |
| ---------------------------- | ---------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------- |
| **ClickEmCore**              | The plugin: about 40 independent modules                                           | [Gameplay](/lethium-docs/gameplay.md), [Configuration](/lethium-docs/configuration.md) |
| **The Clicker setup**        | A preconfigured server folder: five built worlds, about 35 plugins, all configured | [Server setup](/lethium-docs/server-setup.md)                                          |
| **Commands and permissions** | Player and staff commands                                                          | [Commands](/lethium-docs/commands/player-commands.md)                                  |
| **Placeholders**             | `%clickem_*%` values for HUDs and boards                                           | [Placeholders](/lethium-docs/placeholders.md)                                          |
| **Developer API**            | Hook your own plugin into ClickEm                                                  | [Developer API](/lethium-docs/dev-api.md)                                              |
| **Recipes**                  | Step by step jobs                                                                  | [How-to](/lethium-docs/how-to.md)                                                      |

### Where to start

{% columns %}
{% column %}
**Setting up a server**

1. [Requirements](/lethium-docs/getting-started/requirements.md)
2. [Installation](/lethium-docs/getting-started/installation.md)
3. [First start](/lethium-docs/getting-started/first-start.md)
4. [Launch checklist](/lethium-docs/getting-started/launch-checklist.md)
   {% endcolumn %}

{% column %}
**Running it**

1. [Configuration basics](/lethium-docs/configuration.md)
2. [Admin commands](/lethium-docs/commands/admin-commands.md)
3. [Permissions](/lethium-docs/commands/permissions.md)
4. Troubleshooting
   {% endcolumn %}
   {% endcolumns %}

### Terms

| Term             | Meaning                                                                                                                                     |
| ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------- |
| **Coins**        | The main currency. Called "Gold" in some of the default text.                                                                               |
| **Gems**         | The premium currency.                                                                                                                       |
| **Essence**      | Artifact Essence: the drop currency for Artifacts and Abilities.                                                                            |
| **Power**        | The damage stat. In files it is `damage`.                                                                                                   |
| **Module**       | One ClickEm feature that can be switched on or off.                                                                                         |
| **Zone**         | One fighting area.                                                                                                                          |
| **Language key** | A dotted name such as `clickem.upgrades.power.name` that points to text in `lang/en_us.yml`.                                                |
| **Units**        | A reward number written small that is scaled to the player's progress. See [Reward scaling](/lethium-docs/configuration/reward-scaling.md). |


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