Why did we keep 192 rounds?
We kept 192 of 227 recorded completions from 19 October to 9 November 2026 (UTC). We removed 34 rounds from known administration accounts and one other round without verified answers. No other rounds failed the checks for valid answer totals.
| Step | Rounds |
|---|---|
| Completed with a recorded result | 227 |
| From known administration accounts | 34 |
| Other rounds without verified answers | 1 |
| Included in the analysis | 192 |
What counts as a finish?
Every row starts with a completed web game and a recorded result. If the same profile finished twice, it contributed two rounds. Visits, unfinished games and results the site did not record fall outside this count.
The sample includes checked results across 15 game types. We show game or difficulty breakdowns only where at least ten profiles contributed. Even then, the breakdown describes those rounds alone.
Why keep the two samples separate?
The first 200 recorded games included 90 eligible rounds after similar exclusions. Its time span and selection rule differ: it stopped at the 200th finish, while the later snapshot uses a fixed date window. Comparing those totals would tell us very little about growth.
You can check the exact dates and exclusions in BrainiLab’s aggregate data.
Read the rest of the BrainiLab quiz data series.