Public sources below were reviewed for this research. Supplier materials establish what the supplier publishes, not independently verified performance or account-specific rights. Browser documentation and regulatory sources support the technical and legal distinctions; the scoring model is the desk’s proposed methodology.
Supplier permissions, products and integration documentation
- Pragmatic Play — Terms of Use: https://www.pragmaticplay.com/en/terms-of-use/
- First Look Games — Terms and publisher EULA: https://firstlookgames.com/terms-conditions/
- First Look Games — Demo Game Server: https://firstlookgames.com/products/demo-game-server/
- First Look Games — Checking and Managing Your Demo Game Setup, 20 August 2026: https://firstlookgames.com/flg/checking-and-managing-your-demo-game-setup/
- Slots Launch — API Getting Started: https://docs.slotslaunch.com/article/11-getting-started
- Slots Launch — Direct Embeds Getting Started: https://docs.slotslaunch.com/article/16-getting-started
- Slots Launch — API Endpoints: https://docs.slotslaunch.com/article/12-api-endpoints
- Slots Launch — Products and Pricing: https://slotslaunch.com/pricing
- MarketJS — Buyer FAQ: https://www.marketjs.com/buyer-faq/
- EveryMatrix — DraftKings deployment through SlotMatrix: https://everymatrix.com/news/everymatrix-goes-live-with-draftkings/
- Gamzix — Iframe integration events: https://api-doc.gamzix.com/docs/iframe/v.1.0.0/
Browser and performance documentation
- MDN — iframe element and event behaviour: https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/iframe
- MDN — Window.postMessage: https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage
- MDN — CSP frame-ancestors: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/frame-ancestors
- MDN — CSP frame-src: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/frame-src
- MDN — Timing-Allow-Origin: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Timing-Allow-Origin
- MDN — Third-party cookies: https://developer.mozilla.org/en-US/docs/Web/Privacy/Guides/Third-party_cookies
- Google web.dev — Largest Contentful Paint: https://web.dev/articles/lcp
- WebKit — Tracking Prevention: https://webkit.org/tracking-prevention/
Regulators and official rules
- FTC — Endorsement Guides: What People Are Asking: https://www.ftc.gov/business-guidance/resources/ftcs-endorsement-guides-what-people-are-asking
- FTC — Complying with COPPA: Frequently Asked Questions: https://www.ftc.gov/business-guidance/resources/complying-coppa-frequently-asked-questions
- Federal Register — COPPA final rule, 22 April 2025: https://www.govinfo.gov/content/pkg/FR-2025-04-22/html/2025-05904.htm
- CPPA — Current regulations index: https://www.cppa.ca.gov/regulations/
- CPPA — Linked regulations effective 1 January 2026, including section 7025: https://www.cppa.ca.gov/regulations/pdf/ccpa_statute_eff_20260101.pdf
- New Jersey DGE — Affiliate Due Diligence Letter, 9 September 2024: https://www.nj.gov/oag/ge/docs/Forms/AffiliateDueDiligenceLetter.pdf
- UK Gambling Commission — RTS 6, used only as an explicitly UK reference: https://www.gamblingcommission.gov.uk/manual/remote-gambling-and-software-technical-standards/rts-6-result-determination-for-play-for-free-games