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title: Top Packages Algorithm
## Pseudo rolling average
Every package loses 5% of its score every day.
An open source package will gain 1 score for each unique download,
whereas a non-free package will only gain 0.1 score.
A package currently only gains score through downloads.
In the future, a package will also gain score through reviews.
## Seeded using a legacy heuristic
The scoring system was seeded (ie: the scores were initially set to) 20% of an
arbitrary legacy heuristic that was previously used to rank packages.
This legacy heuristic is as follows:
forum_score = views / max(years_since_creation, 2 weeks) + 80*clamp(months, 0.5, 6)
forum_bonus = views + posts
multiplier = 1
if no screenshot:
multiplier *= 0.8
if not foss:
multiplier *= 0.1
score = multiplier * (max(downloads, forum_score * 0.6) + forum_bonus)
As said, this legacy score is no longer used when ranking mods.
It was only used to provide an initial score for the rolling average,
which was 20% of the above value.
## Transparency and Feedback
You can see all scores using the [scores REST API](/api/scores/).
Consider [suggesting improvements](https://github.com/minetest/contentdb/issues/new?assignees=&labels=Policy&template=policy.md&title=).
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