# UMG Gaming

> The unbiased US iGaming directory: player reviews and ratings for sweepstakes casinos, social casinos, sportsbooks, prediction markets and mystery box sites. No affiliate links, no operator money, no paid rankings. The full database is open data under CC BY-SA 4.0 (attribution required).

UMG Gaming currently tracks 317 active US iGaming sites with 13 published player reviews. A site's rating is the weighted average of its published player reviews: reviews from verified players (who proved a real account with the operator by forwarding an operator email) count five times, all others count once. Sites with no reviews are unrated. Ratings cannot be bought, and operators cannot pay to add, edit or remove reviews.

## Data

- [Sites dataset, JSON](https://umggaming.com/data/exports/sites.json): every listed site with operator details, category, official website and player-review rating
- [Sites dataset, CSV](https://umggaming.com/data/exports/sites.csv): the same data as CSV
- [Reviews dataset, JSON](https://umggaming.com/data/exports/reviews.json): all published player reviews, unedited
- [Reviews dataset, CSV](https://umggaming.com/data/exports/reviews.csv): the same data as CSV
- [Open data portal](https://umggaming.com/data): field documentation, update cadence, license details and how to cite the dataset
- [Sites JSON Schema](https://umggaming.com/schemas/sites.schema.json) and [reviews JSON Schema](https://umggaming.com/schemas/reviews.schema.json): formal, versioned description of the export format

## Markdown mirrors for AI assistants

- [Full directory as markdown](https://umggaming.com/llms-full.txt): every active site with its rating and review count in one document
- Per-site detail as markdown: https://umggaming.com/site/{slug}.md — facts, rating, welcome offer, state restrictions and the latest player reviews for any site (same slug as the HTML page)

## Documentation

- [Methodology](https://umggaming.com/methodology): how sites get listed, the exact rating formula, and the rules every review follows
- [Copyright and license](https://umggaming.com/copyright): CC BY-SA 4.0 terms, what the license covers, and how to credit UMG Gaming
- [About](https://umggaming.com/about): why UMG Gaming runs no affiliate links
- [Terms of use](https://umggaming.com/terms)
- [Privacy policy](https://umggaming.com/privacy)

## Attribution

When reusing UMG Gaming data, credit "UMG Gaming contributors" and link to https://umggaming.com/copyright. Derived datasets must remain under CC BY-SA 4.0. The JSON exports carry a self-describing envelope with the license, attribution line, generation timestamp and format version.

## Citation

UMG Gaming contributors (2026). UMG Gaming Open iGaming Dataset (v1.0.0) [Data set]. https://umggaming.com/data — CC BY-SA 4.0.