Public registry of 3,646 slots from 15 providers. Stated RTP, native variants, weekly source snapshots — every entry traceable to a provider URL. Free to embed with attribution. methodology
Live data for Sweet Bonanza — every claim above the fold has a source URL behind it. Click to verify yourself.
Every record in the registry carries the same provenance: source URL, sha256 content snapshot, verification timestamp. Auditable from your laptop in 10 seconds.
Four use-case clusters built for slot reviewers, casino comparison editors, and data engineers.
Public registry of 3,646 provider-stated RTP values across 15 providers. Native variant ranges, volatility, max-win, release year — every entry traceable to a source URL with weekly verification snapshots.
For: top-N RTP roundups, provider comparison pages, factual reference in any slot review.
Browse the database ↓One-line iframe embed per slot. Auto-updates weekly from the same registry — no maintenance on your side. Light/dark themes, customizable accent color, optional white-label removal of attribution on paid tier.
For: affiliate slot reviews, casino comparison articles, sticky sidebars, top-of-article fact cards.
See widget examples ↓Pick 2-3 slots from the registry, get an auto-built comparison table with Markdown, HTML, and Schema.org JSON-LD outputs — plus a single iframe that renders all selected slots together for embedding.
For: X vs Y articles, top-3 RTP roundups, variant comparison pieces, provider-vs-provider analysis.
Try compare mode ↓Programmatic access via /api/rtp/list and /api/rtp/. Public JSON, CORS-enabled, CC-BY 4.0 license. 1000 requests/day per IP, no signup required. Schema.org Dataset markup discoverable via Google Dataset Search.
For: casino comparison engines, slot review automation, content management workflows, data journalism.
API docs →Pick a slot → get a ready-made citation, paragraph, disclaimer, and embed code in 60 seconds. Built for: slot reviews, top-N RTP roundups, comparison articles, sticky sidebars.
Pick a style → customize → copy widget + Schema.org snippet. Done in 60 seconds.
Most slot reviews score poorly on E-E-A-T because they quote RTP without source citations. Our widget ships a copy-paste JSON-LD snippet — paste it in your page <head> alongside the iframe. Google reads it as Dataset + Product structured data attached to your URL.
Optional <Affiliate URL> + <Label> turns the widget into a CTA for your casino partner. No revenue share — we don't take a cut. Click goes straight to your tracking link with rel="sponsored nofollow" (correct per Google guidelines).
Weekly Monday cron re-scrapes all 15 providers. RTP changes propagate to every embed automatically — you don't refresh anything. Each record carries source_url + sha256 snapshot hash, so the citation is auditable.
Each widget shows a Verified pill + last-refresh date + tracked-since timestamp. Readers see at a glance that the data is current. Stable for the last N weeks = signal of provider reliability.
Free tier: small "data: toolsgambling.com" link in the widget footer (one inbound link to us per embed). Pro tier (manual issuance — DM): white-label, no attribution, custom domain. No signup, no Stripe, no friction for the free tier.
Every entry is a real slot from one of 15 production providers (Pragmatic Play, NetEnt, Play’n GO, Yggdrasil, BGaming and 10 others). For each slot we store stated RTP, native RTP variants when the provider publishes them, volatility, max win, release year, and source URL. 707 slots have multiple RTP variants published by the provider — that’s the data point you won’t find anywhere else.
We scrape each provider’s public website, store a content snapshot (sha256 hash) for every record, and refresh weekly via cron. No regulator data — regulators don’t publish per-slot RTP. We track what providers themselves publish, which is the same source any other site has access to. See methodology for the full provenance chain.
Search or filter by provider/game type below. Click any row to expand the slot panel with full data, an embed generator, and a shareable deep link. Want to embed the widget on your site? See how to embed. Track when RTP changes? Watch the changelog.
Provider-published RTP sits across 15+ provider websites, each with its own format. Casino help pages show a different RTP again — the value the operator licensed for that specific install. Affiliate sites quote numbers without source citations. Journalists writing about gambling math have no canonical place to verify a claim.
It's the value the provider declares to regulators and casinos. Different operators may license different variants (e.g. 96.5% / 94.5% / 92.0% for the same game), but the provider's published value is the audited reference. Tracking it cleanly, with snapshot evidence, is what makes downstream comparison possible.
One database. One source per record. One canonical URL for citation. Free to embed with attribution, free to query via API, weekly-refreshed via cron — no manual edit-then-deploy loop.
Every record carries a source_url + snapshot_id (sha256 hash of the scraped HTML at fetch time) + last_verified. 270 MB of raw HTML evidence stored. Verifiable, not vibes.
707 slots with 2–7 RTP variants the provider explicitly publishes (Play'n GO publishes 5 variants per slot, Yggdrasil publishes ranges). Most registries flatten this to a single number — we don't.
Mondays 06:00 UTC, all 15 providers re-scraped. Six trigger criteria detect material change (≥0.5% RTP shift, any new variant, ≥25 new slots, coverage status changes, etc.). Public changelog auto-fills. /rtp/changelog
All data licensed CC-BY 4.0. Reusable for journalism, research, commercial integration — with attribution. Schema.org Dataset markup makes it indexable in Google Dataset Search.
Free for affiliate sites, blogs, casino reviews — three sizes, three themes, custom accent color. Iframe embed, no setup. Each embed gets a dofollow link back to the registry. how to embed
Public JSON API, 1,000 requests / 24h per IP, no signup required. Pro tier (early access via email) for higher quota. API docs
Verified facts, ready to drop into your own writing. Or copy a pre-written template if you're in a hurry.
RTP is provider-stated and represents long-run expected return, not single-session result. Casinos may install regional or operator-specific variants; check the slot's info page in your casino client for the live value.
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "Dataset",
"@id": "https://toolsgambling.com/rtp?slot=100-zombies#dataset",
"name": "100 Zombies RTP — Endorphina",
"description": "Verified Return-to-Player (RTP) data for 100 Zombies, a slot game by Endorphina. Stated RTP 96.03%. Source-cited, weekly re-verified, CC-BY 4.0.",
"url": "https://toolsgambling.com/rtp?slot=100-zombies",
"creator": {
"@type": "Organization",
"name": "ToolsGambling",
"url": "https://toolsgambling.com"
},
"isAccessibleForFree": true,
"license": "https://creativecommons.org/licenses/by/4.0/",
"keywords": "100 Zombies, RTP, Endorphina, slot machine, return to player",
"datePublished": "2026-04-01",
"dateModified": "2026-05-11T17:46:46.697Z",
"citation": {
"@type": "WebPage",
"url": "https://endorphina.com/games/100-zombies",
"publisher": {
"@type": "Organization",
"name": "Endorphina"
}
}
},
{
"@type": "Product",
"@id": "https://toolsgambling.com/rtp?slot=100-zombies#product",
"name": "100 Zombies",
"brand": {
"@type": "Brand",
"name": "Endorphina"
},
"category": "Online Slot Game",
"additionalProperty": [
{
"@type": "PropertyValue",
"name": "RTP",
"value": "96.03",
"unitText": "%"
},
{
"@type": "PropertyValue",
"name": "Volatility",
"value": "low"
}
]
}
]
}
</script>100 Zombies has a stated RTP of 96.03%, source-verified by ToolsGambling on May 11, 2026.
Endorphina's 100 Zombies carries a stated Return-to-Player of 96.03%, verified against the provider's own catalogue page on May 11, 2026. The RTP figure represents long-run mathematical expectation, not session-level outcome. Source URL and snapshot evidence are available for citation.
100 Zombies (Endorphina) — RTP 96.03%, verified by ToolsGambling on May 11, 2026. Source: endorphina.com
**100 Zombies** (Endorphina) — RTP **96.03%**, verified by [ToolsGambling](https://toolsgambling.com/rtp?slot=100-zombies) on May 11, 2026. Source: [endorphina.com](https://endorphina.com/games/100-zombies)
<div style="border:1px solid #d4d4d8;border-radius:8px;padding:16px 20px;font-family:-apple-system,sans-serif;max-width:400px;">
<div style="display:flex;align-items:baseline;justify-content:space-between;margin-bottom:8px;">
<strong style="font-size:16px;">100 Zombies</strong>
<span style="font-size:12px;color:#71717a;">Endorphina</span>
</div>
<div style="font-size:24px;font-weight:700;color:#4d6e00;">96.03% RTP</div>
<div style="font-size:11px;color:#71717a;margin-top:6px;">May 11, 2026 · <a href="https://toolsgambling.com/rtp?slot=100-zombies" style="color:#4d6e00;">Verified by ToolsGambling</a></div>
</div>Static fact card with data as of May 11, 2026. For auto-updating data, use the live widget below.
Generate a domain-bound white-label token in /account, then paste it here.
<iframe src="https://toolsgambling.com/widget/rtp/100-zombies?v=1.0.0" width="100%" height="340" frameborder="0" loading="lazy" style="max-width: 400px; border: 0;"></iframe>
Add a Custom HTML block, paste the code, click Update. Done.
Drag an Embed element where you want the widget, paste the code in the editor, save and publish.
Click + Add → Embed → Embed HTML. Paste the code in "Add your code here" and click Update.
In the post editor, click + → HTML. Paste the code into the HTML card.
Paste the iframe code anywhere in your HTML — inside an article, sidebar, or hero section. Works everywhere iframes are allowed.
Paste this <script type="application/ld+json"> in your page <head> alongside the iframe. Google indexes it as Dataset + Product structured data attached to your URL — free SEO signal for your slot review.
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "Dataset",
"@id": "https://toolsgambling.com/rtp?slot=100-zombies#dataset",
"name": "100 Zombies RTP — Endorphina",
"description": "Verified Return-to-Player (RTP) data for 100 Zombies, a slot game by Endorphina. Stated RTP 96.03%. Source-cited, weekly re-verified, CC-BY 4.0.",
"url": "https://toolsgambling.com/rtp?slot=100-zombies",
"creator": {
"@type": "Organization",
"name": "ToolsGambling",
"url": "https://toolsgambling.com"
},
"isAccessibleForFree": true,
"license": "https://creativecommons.org/licenses/by/4.0/",
"keywords": "100 Zombies, RTP, Endorphina, slot machine, return to player",
"datePublished": "2026-04-01",
"dateModified": "2026-05-11T17:46:46.697Z",
"citation": {
"@type": "WebPage",
"url": "https://endorphina.com/games/100-zombies",
"publisher": {
"@type": "Organization",
"name": "Endorphina"
}
}
},
{
"@type": "Product",
"@id": "https://toolsgambling.com/rtp?slot=100-zombies#product",
"name": "100 Zombies",
"brand": {
"@type": "Brand",
"name": "Endorphina"
},
"category": "Online Slot Game",
"additionalProperty": [
{
"@type": "PropertyValue",
"name": "RTP",
"value": "96.03",
"unitText": "%"
},
{
"@type": "PropertyValue",
"name": "Volatility",
"value": "low"
}
]
}
]
}
</script>Paste in <head>, body, or near the widget. Anywhere on the page works for Google.
Renders a "Play at →" button inside the widget. Click goes to your tracking URL. No revenue share with us. Configure rel attribute for your affiliate setup (direct link or cloaked redirect).
Recommended: direct affiliate link. Google's preferred 'sponsored' marker (combined with nofollow).
Only https:// URLs accepted. Label max 60 chars. Cloaked redirects (your-site.com/go/casino) work — pick 'none' to keep your own SEO control.
https://toolsgambling.com/rtp?slot=100-zombies&theme=light| Slot | RTP | Var | Compare |
|---|---|---|---|
| *NSYNC Pop | 96.20% | 5 | |
| #luxurylife | 96.10% | 1 | |
| 10 Swords | 96.41% | 2 | |
| 10,000 Wonders Big Bang | 96.00% | 3 | |
| 10,000 Wonders MultiMax | 96.00% | 3 | |
| 10,001 Nights | 95.73% | 1 | |
| 10,001 Nights Megaways | 95.69% | 1 | |
| 100 Zombies | 96.03% | 1 | |
| 100 Zombies Dice | 96.03% | 1 | |
| 10000 BC 2 DoubleMax | 94.00% | 2 | |
| 10000 X GOLD | 94.00% | 2 | |
| 10000X Gold 2 | 96.00% | 4 | |
| 1001 Mystery Genie Fortunes | 96.20% | 5 | |
| 101 Candies | 96.08% | 1 | |
| 108 Heroes | 96.56% | 1 | |
| 108 Heroes Water Margin | 96.06% | 1 | |
| 12 Bells | 96.15% | 1 | |
| 12 Bolts of Thunder | 96.15% | 1 | |
| 12 Coins | 96.13% | 1 | |
| 12 Coins Grand Diamond Edition | 96.14% | 1 | |
| 12 Coins Grand Gold Edition | 96.13% | 1 | |
| 12 Coins Grand Platinum Edition | 96.15% | 1 | |
| 12 Skulls of the Dead | 96.00% | 1 | |
| 123 Soccer Link and Merge | 96.12% | 1 | |
| 1429 Uncharted Seas | 98.00% | 1 | |
| 15 Coins | 96.07% | 1 | |
| 15 Coins Grand Diamond Edition | 96.15% | 1 | |
| 15 Coins Grand Gold Edition | 96.18% | 1 | |
| 15 Coins: Grand Platinum Edition | 96.17% | 1 | |
| 15 Crystal Roses: A Tale of Love | 96.20% | 5 | |
| 16 Coins | 96.18% | 1 | |
| 16 Coins Diamond Burning Board | 96.15% | 1 | |
| 16 Coins Grand Gold Edition | 96.15% | 1 | |
| 16 Coins Grand Platinum Edition | 96.16% | 1 | |
| 16 Coins x5000 | 96.17% | 1 | |
| 1942: Sky Warrior | 95.68% | 1 | |
| 2 Fast 2 Fruity | 94.00% | 2 | |
| 2 Powerful Dragons | 96.00% | 1 | |
| 2 Sweet 4 U | 94.00% | 2 | |
| 20 Coins | 96.18% | 1 | |
| 20 Coins Grand Gold Edition | 96.15% | 1 | |
| 20 Times Casino | 94.00% | 2 | |
| 2016 Gladiators | 94.76% | 1 | |
| 2020 HIT | 96.07% | 1 | |
| 2021 HIT | 96.02% | 1 | |
| 2022 Hit | 96.03% | 1 | |
| 2023 Hit | 96.01% | 1 | |
| 2023 Hit Slot Dice | 96.01% | 1 | |
| 2024 Hit | 96.05% | 1 | |
| 2025 Hit | 96.05% | 1 |
—. Currently 77% have volatility, 28% have max win, 19% have hit frequency. Per-field coverage is documented in methodology.source_url, snapshot_id (sha256 of scraped HTML), last_verified timestamp. Schema.org Dataset markup makes the registry indexable in Google Dataset Search. Licensed under CC-BY 4.0 — citation-grade.ToolsGambling Slot RTP Registry, v1.0.0, https://toolsgambling.com/rtp. For specific slots, link to https://toolsgambling.com/rtp?slot=<canonical-slug>. Include the access date — we record last_verified timestamps you can quote alongside.toolsgambling.com/rtp in the footer (dofollow). Pro tier (early access via email) removes attribution + raises API quota. How to embed.X-RateLimit-Limit / X-RateLimit-Remaining / X-RateLimit-Reset on every response. For higher quota or commercial use cases, email hello@toolsgambling.com for early-access keys.source_url + sha256 snapshot hash. See methodology for the full provenance chain, or the about page for who runs this and why.