> 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/gameplay/upgrades.md).

# Upgrades

The Coins shop of permanent stat upgrades, with cost curves and zone gates.

File: `plugins/ClickEmCore/modules/upgrades.yml`. Module id: `upgrades`. Commands: `/upgrades`, `/upgrade`.

Upgrades are the first thing a new player touches. They cost **Coins only** and each level permanently adds stats. They are available from the start with no requirements, except the optional zone gates.

```yaml
upgrades:
  power:
    rarity: LEGENDARY
    display-name: "clickem.upgrades.power.name"
    icon: STRING
    custom-model-data: 10007
    max-level: 500
    base-cost: 20
    cost-growth: 1.056
    effect-curve: LINEAR
    stats-per-level:
      damage-mult: 1.0
    zone-gates:
      - {zone: w2_zona1, cap: 100}
      - {zone: w3_zona1, cap: 200}
```

| Key                         | Meaning                                                                                                                                                                  |
| --------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `display-name`              | Language key (or plain text). The name and lore live in `lang/en_us.yml` under `clickem.upgrades.<id>`.                                                                  |
| `icon`, `custom-model-data` | Menu icon. The shared resource-pack model is removed when maxed and a beacon shows instead.                                                                              |
| `max-level`                 | Highest level.                                                                                                                                                           |
| `base-cost`, `cost-growth`  | The next level costs `base-cost x cost-growth^(current level)` Coins. This price is fixed and is not scaled to the player's progress.                                    |
| `effect-curve`              | `LINEAR`: effect = `stats-per-level x level`. `GEOMETRIC`: compounding, set `effect-growth` above 1. `LOGARITHMIC`: fast early, tapering, controlled by `effect-growth`. |
| `stats-per-level`           | [Stat keys](/lethium-docs/configuration/stats-and-limits.md) granted per level.                                                                                          |
| `zone-gates`                | Stops players pumping all early Coins into one upgrade. Free up to the lowest `cap`, then the listed zone must be unlocked to pass each cap.                             |
| `rarity`                    | Tooltip frame only.                                                                                                                                                      |

The shipped upgrades are Power, Crit Chance, Crit Damage, Luck and more, each with 500 levels and one world's worth (100 levels) opened per zone gate.

### How to

{% tabs %}
{% tab title="Make an upgrade cheaper or dearer" %}
Change `base-cost` (price of level 1) or `cost-growth` (how fast it climbs). `1.056` doubles the price about every 13 levels.
{% endtab %}

{% tab title="Remove a zone gate" %}
Delete the `zone-gates:` block of that upgrade. It then just costs Coins all the way.
{% endtab %}

{% tab title="Add a new upgrade" %}
Copy an existing block, give it a new id, add `clickem.upgrades.<newid>.name` (and lore) to `lang/en_us.yml`, then run `/clickem reload`.
{% endtab %}

{% tab title="Change what an upgrade gives" %}
Edit `stats-per-level`. `damage-mult: 1.0` at level 100 = +100% Power.
{% endtab %}
{% endtabs %}

### Staff commands

`/ceadmin upgrades set <player> <upgrade> <level>`, `/ceadmin upgrades reset <player> [upgrade]`.

Upgrades reset on [Rebirth](/lethium-docs/gameplay/rebirth.md).


---

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