# Friday Facts #375 - Quality

*Source* · `src-wube-2023-fff-375-quality` · status: **n/a**

| field | value |
|---|---|
| kind | Technical report / blog |
| authors | kovarex |
| venue | Factorio blog (Wube Software) |
| date | 2023-09-08 |
| url | https://factorio.com/blog/post/fff-375 |
| accessed | 2026-10-24 |

## Notes

Five quality levels (normal, uncommon +30%, rare +60%, epic +90%, legendary +150%); quality module 1 adds +1% chance; each further step 10x less likely; recycler returns 25% of ingredients; productivity capped at +300%.

## Backlinks (computed)

**cited by:** [Factorio](../game/factorio.md), [Machine boosting](../mechanic/machine-boosting.md), [Quality tiers](../mechanic/quality-tiers.md)

## Citation

kovarex (2023-09-08). *Friday Facts #375 - Quality*. Factorio blog (Wube Software) https://factorio.com/blog/post/fff-375

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Provenance: created in run `2026-10-24-taxonomy-m1`.