Sources and methodology
Full transparency on the origin and processing of our data
Data source
All data displayed on 0kill-7assists comes exclusively from the public Fortnite ecosystem API provided by Epic Games, Inc. This API gives access to metrics such as player count, peak concurrent users (CCU), session duration, retention rate and island metadata (name, code, creator, category).
We do not scrape any third-party sites and do not generate synthetic data. Every number displayed comes directly from the API.
Fetch process
Our data collection pipeline runs daily through an automated process:
- Scheduled execution every morning to fetch the previous day's data
- Strict compliance with rate limits imposed by Epic Games' API
- Exponential backoff mechanism on errors or quota exceeded responses
- Data validation and cleaning before insertion into our database
- Full site rebuild with fresh data
Ranking methodology
Our rankings are based on a composite score calculated from several weighted metrics:
| Metric | Description |
|---|---|
| Cumulative players | Total number of players who visited the island |
| Peak CCU | Maximum number of concurrent players observed |
| Session duration | Average time spent per player on the island |
| Retention rate | Proportion of players who return the next day |
| Growth | Player count change over the last 24 hours |
Each metric is normalized and then weighted to produce a single final score that allows consistent ranking across all islands.
Growth score
The growth score measures an island's momentum over a rolling 24-hour window. It is calculated by comparing today's player count with yesterday's, expressed as a percentage change.
Islands whose growth score exceeds a certain threshold are featured in the Breakout section and in the daily digest. This mechanism helps detect promising new maps before they reach the top of the general rankings.
Indexing thresholds
To maintain site quality and avoid generating low-value pages, we apply minimum thresholds:
- Minimum cumulative player count for page generation
- Minimum peak CCU for inclusion in category rankings
- Pages below thresholds receive a noindex tag to prevent search engine indexing
These thresholds are adjusted periodically based on the overall evolution of the Fortnite Creative ecosystem.
Limitations
In the interest of full transparency, here is what we cannot do:
- We cannot guarantee data completeness: Epic Games' API may not cover every existing island
- Data is collected once per day; intra-day fluctuations are not captured
- The API may occasionally return incomplete or temporarily unavailable data
- Changes to Epic's API structure may temporarily affect data collection
We do our best to mitigate these limitations and report any known issues on our contact page.