Coal Bug
Insect · 2-star rarity · Sells for 110 Gold
No longer available. It was only around during the Pyrofrost Bathhouse season, 8 Nov 2025 – 19 Dec 2025.
How to get: Forest (Deer Tower)
Where and when
The Pyrofrost Bathhouse season ended on 19 Dec 2025. These are the conditions it had while the season ran.
| Kind | Insect |
| Availability | Unavailable Pyrofrost Bathhouse · 8 Nov 2025 – 19 Dec 2025 |
| Where | Deer Tower |
| Time | All day |
| Weather | SunnyRainyRainbow |
Star grades
Every Coal Bug is caught at one of five star grades, decided by its size, which can be anywhere from 1 cm to 6 cm. The grade sets the sale price: a 5-star sells for 8× as much as a 1-star.
| Grade | Chance | Size from | Sells for |
|---|---|---|---|
| ★☆☆☆☆ Tiny | 50.19% | 1 cm | 110 |
| ★★☆☆☆ Small | 28.00% | 2 cm | 165 |
| ★★★☆☆ Fitting | 15.00% | 3 cm | 220 |
| ★★★★☆ Large | 4.50% | 4 cm | 440 |
| ★★★★★ Huge | 2.31% | 5 cm | 880 |
On average, one Coal Bug sells for 175.
Description
| Encyclopedia | A toy bug made of coal. What a unique way to transform energy! |
Name in every language
| 简体中文 | 煤块虫 |
| 繁體中文 | 煤塊蟲 |
| English | Coal Bug |
| Deutsch | Kohleinsekt |
| Français | Insecte de charbon |
| 日本語 | ススムシ |
| 한국어 | 석탄 벌레 |
| Español | Bicho de carbón |
| Português | Bicho de Carvão |
| ไทย | แมลงถ่านหิน |
| Русский | Угольный жук |
| Bahasa | Serangga Batubara |