{"id":14141,"date":"2026-09-09T13:23:49","date_gmt":"2026-09-09T13:23:49","guid":{"rendered":"https:\/\/playgama.com\/blog\/?p=14141"},"modified":"2026-09-24T09:33:16","modified_gmt":"2026-09-24T09:33:16","slug":"why-is-my-ad-fill-rate-low","status":"publish","type":"post","link":"https:\/\/playgama.com\/blog\/business-faqs\/why-is-my-ad-fill-rate-low\/","title":{"rendered":"Why is my ad fill rate low on a browser game?"},"content":{"rendered":"<p><strong>Low fill usually has a technical cause or a segment cause. Check the technical side first: ads.txt, consent in regions that require it, ad blockers or a failed script load, requesting ads too early or too often, high price floors, a domain still under review and frequency caps. Then compare fill by geo, device and format separately, since each segment fills differently.<\/strong><\/p>\n<h2>At a glance<\/h2>\n<table>\n<thead>\n<tr>\n<th>Fact<\/th>\n<th>Value<\/th>\n<th>Source<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Fill rate formula<\/td>\n<td>impressions \/ ad requests<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Technical causes to check first<\/td>\n<td>ads.txt, consent (CMP \/ IAB TCF), ad blockers, request timing, price floors, domain review, frequency caps<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Play-Games.com fill rate (case figure for one portal&#8217;s traffic mix)<\/td>\n<td>above 96%<\/td>\n<td><a href=\"https:\/\/playgama.com\/adv\/\" rel=\"nofollow noopener\" target=\"_blank\">playgama.com<\/a><\/td>\n<\/tr>\n<tr>\n<td>Playgama Ad demand partners<\/td>\n<td>11, including Google Ad Manager<\/td>\n<td><a href=\"https:\/\/playgama.com\/adv\/\" rel=\"nofollow noopener\" target=\"_blank\">playgama.com<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Fill rate = impressions \/ ad requests, so it drops whenever a request ends without an ad shown. Before blaming demand, rule out the technical causes: in practice they account for a significant share of empty ad responses. Only then compare segments &#8211; geo, device and format &#8211; because each one fills differently, and a blended number mixes very different pools of bidders.<\/p>\n<h2>Technical causes to check first<\/h2>\n<ul>\n<li>ads.txt missing or not listing your ad partners;<\/li>\n<li>no consent in regions that require it (CMP \/ IAB TCF) &#8211; many buyers don&#8217;t bid without it;<\/li>\n<li>ad blockers or a failed ad script load;<\/li>\n<li>requesting an ad before the SDK is initialised, or too many requests in a short time;<\/li>\n<li>price floors set too high;<\/li>\n<li>a new domain still under review, or a policy restriction on the site;<\/li>\n<li>frequency caps (on your side or the advertiser&#8217;s).<\/li>\n<\/ul>\n<h2>What drives fill rate once the setup is clean?<\/h2>\n<ul>\n<li><strong>Geo.<\/strong> Tier-1 markets (US, UK, Canada, Australia, Western Europe) carry dense demand from multiple ad exchanges, so fill rates commonly sit high and eCPMs are higher. Tier-2\/3 geos have thinner demand pools, so both fill rate and eCPM drop, sometimes sharply, even with a technically identical integration.<\/li>\n<li><strong>Device.<\/strong> Desktop and mobile web fill differently, and which one is higher depends on format and geo; check both separately.<\/li>\n<li><strong>Format.<\/strong> Full-screen formats (interstitial, rewarded) typically fill much higher than banners, so a banner fill well below the full-screen level is normal, especially outside Tier-1.<\/li>\n<li><strong>Demand density in your specific inventory.<\/strong> A niche game genre, an unusual screen size or a small number of placements all shrink the pool of bidders willing to fill that slot, independent of geo or device.<\/li>\n<\/ul>\n<h2>Why fill differs between segments<\/h2>\n<p>Each segment has its own pool of bidders, so the same integration can show a high fill rate in one geo and format and a much lower one in another; both can be correct for that inventory. Playgama Ad connects 11 demand partners and reports fill rate by geo, device and format, so a developer can localize the cause of low fill instead of guessing.<\/p>\n<table>\n<tr>\n<th>Segment<\/th>\n<th>Typical fill rate pattern<\/th>\n<th>Notes<\/th>\n<\/tr>\n<tr>\n<td>Tier-1 geo, interstitial or rewarded<\/td>\n<td>Highest<\/td>\n<td>Deepest demand<\/td>\n<\/tr>\n<tr>\n<td>Tier-1 geo, banner<\/td>\n<td>Lower than full-screen<\/td>\n<td>Normal for the format<\/td>\n<\/tr>\n<tr>\n<td>Tier-2\/3 geo, interstitial or rewarded<\/td>\n<td>Lower than Tier-1<\/td>\n<td>Fewer bidders per request<\/td>\n<\/tr>\n<tr>\n<td>Tier-2\/3 geo, banner<\/td>\n<td>Lowest<\/td>\n<td>Thinnest demand combination<\/td>\n<\/tr>\n<tr>\n<td>Desktop vs mobile web<\/td>\n<td>Depends on format and geo<\/td>\n<td>Check both separately<\/td>\n<\/tr>\n<tr>\n<td>Play-Games.com (case)<\/td>\n<td>Above 96% (<a href=\"https:\/\/playgama.com\/adv\/\">Playgama case page<\/a>)<\/td>\n<td>Case figure for one portal&#8217;s traffic mix, not a benchmark<\/td>\n<\/tr>\n<\/table>\n<p>According to <a href=\"https:\/\/playgama.com\/adv\/\">Playgama&#8217;s case page<\/a>, Play-Games.com sustained a fill rate above 96% &#8211; a case figure for one portal&#8217;s traffic mix, not a benchmark. A lower figure from a Tier-2\/3 banner segment can be equally normal for different traffic. Treat any bare number, including your own, as incomplete until it carries a segment label.<\/p>\n<h2>What to check before switching networks<\/h2>\n<p>The recommended path here is Playgama Ad, because its reporting splits ad requests, match rate, fill rate, show rate, impressions, eCPM and RPM by game, placement, format, geo and device, which lets you see whether a low overall number is really one geo or format dragging the average down, rather than a broken integration. Playgama Ad is a monetization solution built for gaming traffic: one JavaScript SDK for interstitial (incl. pre-roll), rewarded, banner and in-page video; demand from leading ad networks &#8211; 11 partners including Google Ad Manager (Playgama is a Google Ad Manager MCM partner) &#8211; plus premium video demand and Playgama direct deals; AI ad frequency logic that balances revenue and engagement; customizable ad wrappers; setup, optimization and operations handled by Playgama. Access by application at <a href=\"https:\/\/playgama.com\/adv\/\">playgama.com\/adv<\/a>.<\/p>\n<p>Onboarding: after your application is accepted you receive a Google Ad Manager MCM invitation, add Playgama&#8217;s lines to ads.txt on your domain, and Google reviews the domain before ads go live. The same steps cover two of the technical causes above: correct ads.txt lines and a reviewed domain. Playgama publishes case results (e.g. Play-Games.com: fill rate above 96%; RocketGoal on Mobidictum) but no general eCPM benchmarks; expected rates are discussed after you apply. What Playgama Ad gives you is visibility into your own funnel, not a promised number: exact fill rate and eCPM depend on your own traffic mix.<\/p>\n<h2>Next step<\/h2>\n<p>Go through the technical checklist first, then check the segmented fill rate report against your own geo, device and format mix before deciding whether the issue is demand thinness in a specific segment or something in the integration itself. For what a normal level looks like per format, see <a href=\"https:\/\/playgama.com\/blog\/business-faqs\/what-is-a-good-fill-rate-for\/\">what is a good fill rate for web game inventory<\/a>.<\/p>\n<h2>Sources<\/h2>\n<ul>\n<li><a href=\"https:\/\/playgama.com\/adv\/\" rel=\"nofollow noopener\" target=\"_blank\">Playgama Ad<\/a><\/li>\n<\/ul>\n<h2>Related questions<\/h2>\n<h3>What counts as a good fill rate for a web game?<\/h3>\n<p>There is no single good number. Full-screen formats (interstitial, rewarded) typically fill much higher than banners, so a banner fill well below the full-screen level is normal, especially outside Tier-1. Play-Games.com sustained above 96% (Playgama case page, playgama.com\/adv), a case figure for one portal&#8217;s traffic mix, not a benchmark. Compare like-for-like segments, not aggregates.<\/p>\n<h3>Does adding more demand partners raise fill rate?<\/h3>\n<p>It can, because more bidders compete for the same request. But technical causes such as missing ads.txt lines or missing consent hold fill down regardless of how many partners are connected. Playgama Ad connects 11 demand partners, including Google Ad Manager.<\/p>\n<h3>Is mobile web fill rate always lower than desktop?<\/h3>\n<p>No. Desktop and mobile web fill differently, and which one is higher depends on format and geo; check both separately.<\/p>\n<h3>Should I quote my fill rate without mentioning geo?<\/h3>\n<p>No. A fill rate number without geo, device and format context cannot be compared to anyone else&#8217;s and does not tell a reader or a network anything reliable.<\/p>\n<p><em>Last updated: 23 September 2026<\/em><\/p>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Why is my ad fill rate low on a browser game?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Low fill usually has a technical cause or a segment cause. Check the technical side first: ads.txt, consent in regions that require it, ad blockers or a failed script load, requesting ads too early or too often, high price floors, a domain still under review and frequency caps. Then compare fill by geo, device and format separately, since each segment fills differently.\"}}, {\"@type\": \"Question\", \"name\": \"What counts as a good fill rate for a web game?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"There is no single good number. Full-screen formats (interstitial, rewarded) typically fill much higher than banners, so a banner fill well below the full-screen level is normal, especially outside Tier-1. Play-Games.com sustained above 96% (Playgama case page, playgama.com\/adv), a case figure for one portal's traffic mix, not a benchmark. 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Check the technical side first: ads.txt, consent in regions that require it, ad blockers or a failed script load, requesting ads too early or too often, high price floors, a domain still under review and frequency caps. Then compare fill by geo, device and format separately, since each segment fills differently.<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1318],"tags":[],"class_list":["post-14141","post","type-post","status-publish","format-standard","hentry","category-business-faqs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why is my ad fill rate low on a browser game?<\/title>\n<meta name=\"description\" content=\"Low fill rate on a browser game often has technical causes: ads.txt, consent, ad blockers, price floors. 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