How SlotMap's slot data works — and what it can't tell you
Every number on this site comes from public information about what is on the casino floors, compiled and dated by us. This page explains how to read it — how much to trust a given row before you walk to a casino — without turning into a shopping list of who publishes what.
Two tiers of evidence
Verified inventory. Some properties' floor inventories are published in a structured, machine-level form. Where that exists we can tell you the individual game configurations on the floor: the title, the denominations it is set to, and how many machines were counted. This is the strongest data on the site, and it is what makes the machine counts possible.
Community reports. Elsewhere, no structured inventory exists at all. For those casinos we compile dated, public first-hand sightings — someone says they played a specific game at a specific casino on a specific date, and we keep the date and the wording that ties the game to the property. Rows resting only on this evidence are labelled Community report. Read them as "someone saw it on that date", not as an inventory. They expire automatically, so the site forgets a sighting rather than letting it go stale.
Both tiers are refreshed on a schedule and stamped with the date shown at the bottom of every page. That capture date is the single most important caveat on this site.
What "machines counted" means
Where machine-level data exists, the figure is the number of machine configurations reported for that title. It is the closest public proxy for "how many cabinets", but a bank of four linked cabinets can appear as four rows or as one depending on how the property configured it — so treat it as a ranking signal rather than a headcount.
Casinos without machine-level coverage show no count at all, and their lists are title-level only: they tell you a game is on the floor, not how many of it. When a title page says a game is "not listed at" a casino, that means not in the data we have for that casino — where our coverage is title-level, the game may well be there and simply unlisted.
Why the floor maps are indicative
The 3D map's casino floors — where the banks sit relative to the entrance, cage and restrooms — are sample layouts. No public source publishes machine positions. The floor outline and landmarks are placed from the building footprint and entrances, and the banks are laid out to give a realistic sense of scale and walking distance, not to send you to a specific aisle. If we ever obtain a surveyed layout for a property, that floor will be marked accordingly.
What we deliberately don't do
- We don't invent titles for casinos without evidence. Only casinos with at least one real row get a page.
- We don't publish return-to-player or "loose slot" claims. Nevada publishes hold percentages by denomination and area, not by machine, and nothing public exists at the title level.
- We don't scrape player accounts or anything behind a login. Everything we compile is publicly visible information.
- We don't present a community sighting as if it were an inventory. The label is always on the row.
Refreshing
The Slot activity heatmap is a separate report index, covering Greater Strip and Downtown. It reads public casino winner galleries, news feeds, player communities and slot creator feeds. A report needs a date, a source link, relevant slot context and one identifiable mapped casino. Table-game results, historical lists, app promotions and ambiguous locations are excluded.
Choose 7, 30 or 90 days, or filter by source type. The map measures reporting activity: reports fade with a 21-day half-life, each publisher's influence is capped, and likely reports of the same jackpot share one event's weight. The timelines count reports, scaled separately for each casino. A publication date is labelled Published; an explicitly supplied win date is labelled Won.
More reporting does not mean better payout odds. Casinos publish selected wins, creators publish selected sessions, and news favours unusual events. A casino without qualifying reports stays neutral. Its slot inventory remains available. Source checks that fail add no new evidence; existing reports remain until they age out. The source details and links are available inside the map.
The whole site — casino pages, title pages, and the data posts on this blog — is regenerated from one dataset, so a refresh updates every table at once. The date next to "updated" on a post is the date of the underlying data.
If you spot a casino or title that looks wrong, tell us: hi@slotmap.net. A correction with the date you saw it is worth more than a whole page of guesswork.