Methodology: how the numbers are made.

The GetNumberOfCurrentPlayers response for app 3393110 supplies the live count. Each successful response gets its own UTC capture time, shown next to the number. When you open a page on this site, the count is requested once and then every five minutes while the tab stays open.

• Scope: Steam only. Players on NC's PURPLE platform are not measured by this endpoint.
• Missing data: a failed request preserves the previous reading with its original time. Unavailable counts are never shown as zero and never interpolated.
• Session observations: readings captured while you browse are stored locally in your browser only — no server-side history is collected on this static site.

Steam's review summary service supplies aggregate positive and negative counts. The displayed percentage is positive divided by all counted reviews at capture time, rounded to one decimal place. These reviews are cumulative — not limited to release day.

• Filters requested: all languages, all purchase types, with Steam's off-topic activity filter applied. A store page using narrower settings can legitimately show a different score.
• Independent capture time: reviews are a separate data request from the player count, so their timestamps can differ.

The 397,905 launch-day peak and its date come from SteamDB's published chart for AION 2. We cite the record as published — we do not scrape SteamDB automatically or label it as our own observation. Release milestones come from the NC announcement and the official Steam store page.