# Gratin Arc

> Gratin Arc is an evolution in tibo.dog. A cheesy arc that chains far and crits often.

Source page: https://www.tibodog.wiki/weapons/gratin-arc · Wiki updated 6 Nov 2026, 03:55 UTC · Game version 75 (`main-CSuyb4iv.js`, data synced 5 Nov 2026, 21:45 UTC)

Breadcrumb: [Main page](/) › [Weapons](/weapons)

| Gratin Arc | |
|---|---|
| Type | Evolution |
| Trigger | Automatic (cooldown) |
| Attack | Chains between enemies (`chain`) |
| Damage | 30 |
| Cooldown (s) | 1 |
| Amount | 2 |
| Area | 1 |
| Speed | 0 |
| Duration (s) | 0 |
| Pierce | 10 |
| Knockback | 0.4 |
| Interval (s) | 0.1 |
| Evolves from | [Starch Chain](/weapons/starch-chain) (level 8) + [Hot Sauce](/passives/hot-sauce) |

**Gratin Arc** is an evolution in tibo.dog. In-game description: “A cheesy arc that chains far and crits often.”

## Overview

Gratin Arc is the evolution of [Starch Chain](/weapons/starch-chain). Every second it sends 3 cheesy arcs (a raw amount of 2 plus the +1 base amount bonus every non-aura weapon gets, see [Stats](/stats)), each starting at the nearest pest within 170 units and jumping up to 10 times, so a single arc can hit 11 enemies for 30 damage each. Jumps reach 85 units instead of Starch Chain's 70, and every hit gets +25% crit chance on top of Tibo's own.

You get it by opening a chest while Starch Chain is level 8 and you own [Hot Sauce](/passives/hot-sauce) at any level. Gratin Arc can still take part in the [Starch Supercell](/weapons/starch-supercell) union with a maxed [Starch Bolt](/weapons/starch-bolt). See [Evolutions](/evolutions) and [Chests](/chests).

## How it works

The chaining follows the same rules as Starch Chain: pierce is the number of jumps (capped at 60), each jump goes to the nearest enemy not yet hit by that arc, and jump distance scales with the square root of area.

The crit bonus is added straight to the hit's crit chance, after Tibo's crit points have been converted into a chance (see [Stats](/stats#crit)). It is not subject to the diminishing returns that apply to crit points. [sim-BkfBhQfw.js: `let u=s.critChance+o.critBonus[r];u>0&&e.rng.next()<u&&(d*=s.critMult,f=!0)`] For example, with no other crit sources, Hot Sauce at level 5 gives 0.3 crit points, about a 23% crit chance, so Gratin Arc hits crit about 48% of the time. A crit multiplies damage by 2 plus Tibo's crit damage.

**Measured** in the headless sim (`tools/play.mjs`, build 41 `main-B2gf34bA.js`, Standard, Normal, god mode, seeds `s1`, `s2` and `s3`; the seeded starting weapon removed, the weapon given with `give`, spawning stopped after 4 s of play and the pests already on the field held at fixed spots with 10⁹ HP; 14 pests held in a line, 30 units apart, from 30 units to Tibo's right): three arcs 0.1 s apart every 1 s each hit the 11 nearest pests; some hits dealt 60, the crits. All three seeds gave the same figures.

## Tips

- Keep levelling Hot Sauce after the evolution: its crit chance stacks with the arc's flat +25%.
- Extra pierce turns into extra jumps here too, and extra amount adds whole arcs.

## Stats

Values are the raw numbers from the game's definitions, before Tibo's global stat multipliers, difficulty and time scaling. In play, Tibo's base stats add **+1 amount** to every weapon except aura, cone, nuke and ring weapons, and make every duration **×1.25** (see [Stats](/stats)). Field names in `code` are the game's internal names. Attack descriptions such as “Melee slash” are this wiki's summary of the internal attack `kind`.

Evolutions have no level-ups in the game data; they use these fixed raw values.

| Stat | Value |
|---|---|
| Damage | 30 |
| Cooldown (s) | 1 |
| Amount | 2 |
| Area | 1 |
| Speed | 0 |
| Duration (s) | 0 |
| Pierce | 10 |
| Knockback | 0.4 |
| Interval (s) | 0.1 |

### Behaviour parameters

Raw parameters of the attack (`behavior`), copied from the game definition. What they do in play is explained under [How it works](#how-it-works) above.

| Parameter | Value |
|---|---|
| `kind` | chain |
| `range` | 170 |
| `jump` | 85 |
| `critBonus` | 0.25 |

## Obtaining

- Get [Starch Chain](/weapons/starch-chain) to level 8 while owning [Hot Sauce](/passives/hot-sauce) (any level), then open a [chest](/chests). See [Evolutions](/evolutions).

## Names in other languages

**Verified**: the name the game shows when another language is selected in Settings, from its translation files. [i18n-ja-content-DO6GrqHt.js: `"content.weapon.gratin-arc.name":["グラタンアーク"]`] See [Languages](/controls#languages).

<details class="raw"><summary>Show names in 26 languages</summary>

| Language | Code | Name |
|---|---|---|
| 简体中文 · Simplified Chinese | `zh-CN` | 焗薯电弧 |
| 繁體中文 · Traditional Chinese (Taiwan) | `zh-TW` | 焗烤電弧 |
| 日本語 · Japanese | `ja` | グラタンアーク |
| 한국어 · Korean | `ko` | 그라탱 아크 |
| Español · Spanish | `es` | Arco gratinado |
| हिन्दी · Hindi | `hi` | ग्रैटिन आर्क |
| Deutsch · German | `de` | Gratinbogen |
| Français · French | `fr` | Arc gratiné |
| Português (Brasil) · Brazilian Portuguese | `pt` | Arco gratinado |
| Türkçe · Turkish | `tr` | Graten Yayı |
| Bahasa Indonesia · Indonesian | `id` | Sambaran Gratin |
| Русский · Russian | `ru` | Дуга гратена |
| Bahasa Melayu · Malay | `ms` | Lengkung Gratin |
| Filipino | `fil` | Arkong Gratin |
| मराठी · Marathi | `mr` | ग्रॅटिन कमान |
| Tiếng Việt · Vietnamese | `vi` | Hồ Quang Gratin |
| తెలుగు · Telugu | `te` | చీజ్ మెరుపు |
| தமிழ் · Tamil | `ta` | சீஸ் மின்னல் |
| বাংলা · Bengali | `bn` | গ্র্যাটিন আর্ক |
| ไทย · Thai | `th` | สายฟ้ากราแตง |
| Hausa | `ha` | Bakan Cuku |
| Naijá · Nigerian Pidgin | `pcm` | Gratin Arc |
| <bdi>العربية</bdi> · Arabic | `ar` | <bdi>قوس الغراتان</bdi> |
| <bdi>فارسی</bdi> · Persian | `fa` | <bdi>قوس گراتن</bdi> |
| <bdi>עברית</bdi> · Hebrew | `he` | <bdi>קשת גרטן</bdi> |
| <bdi>اردو</bdi> · Urdu | `ur` | <bdi>پنیری قوس</bdi> |

</details>

## Data

```json
{
  "id": "gratin-arc",
  "tier": "evolved",
  "base": {
    "damage": 30,
    "cooldown": 1,
    "amount": 2,
    "area": 1,
    "speed": 0,
    "duration": 0,
    "pierce": 10,
    "knockback": 0.4,
    "interval": 0.1
  },
  "behavior": {
    "kind": "chain",
    "range": 170,
    "jump": 85,
    "critBonus": 0.25
  },
  "from": "starch-chain",
  "catalyst": "hot-sauce"
}
```

## Sources

Game version 75: `main-CSuyb4iv.js` / `boot-CPW8VVmR.js` / `sim-BkfBhQfw.js` from https://tibo.dog/, researched 2026-11-05. See [Versions & updates](/versions).
- Content registry exported by `boot-CPW8VVmR.js`; boss definitions and order exported by `sim-BkfBhQfw.js`; lazy endgame definitions from `endgame-content-CyuS5vbP.js` and `catalog.generated-JnyrtBzy.js`
- English names and descriptions from `i18n-en-content--0ALgcKX.js`
- Names in other languages from the 26 `i18n-<code>-content` files of `main-CSuyb4iv.js` (`data/i18n-names.json`)