{"window_days":7,"from":"2026-09-14","games_returned":18,"games_withheld_below_min_bets":25,"min_bets":100,"method":{"estimator":"mean payout multiplier, currency independent","interval":"95%, mean plus or minus 1.96 standard errors","source":"each casino's own public bet feed, captured by us","sampling":"the feeds are rolling windows the operators publish; this is a sample of their flow, not the whole of it, and the selection rule is not visible to us","declared_rtp":"only Stake.com publishes a house edge, so declared_rtp and gap are null for other operators","selection_bias":"the feeds are the operators' own marketing surfaces and the selection leans toward winning rounds, so observed_return is UNCORRECTED and biased upward by an unknown amount that differs per operator. feed_bias reports 'curated' where an observed return above 100% proves the feed is incomplete, since no game returns more than it takes over the long run."},"confidence_levels":{"high":">=10000 bets","moderate":">=1000","low":">=100","insufficient":"<100"},"publishable":["low","moderate","high"],"source_kinds":{"observed":"Counted directly from the operator's public feed.","derived":"Computed from observed data through a documented method.","reported":"Published by the operator. We repeat it, we do not verify it.","estimate":"Model output carrying assumptions. Always a range."},"games":[{"casino":"Cloudbet","game":"Big Bass Bonanza 1000","provider":"pragmatic play","bets":23572,"observed_return":0.3336500933310722,"declared_rtp":null,"gap":null,"std_error":0.019702386199039575,"ci95":[0.29503341638095465,0.37226677028118976],"max_multiplier":200.5,"confidence":"high","margin":0.038616676950117564,"publishable":false,"withheld":"implausible","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9268623790938402,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Cloudbet","game":"Christmas Big Bass Bonanza","provider":"pragmatic play","bets":5909,"observed_return":0.40531392790658444,"declared_rtp":null,"gap":null,"std_error":0.04100943080777155,"ci95":[0.3249354435233522,0.4856924122898167],"max_multiplier":110,"confidence":"moderate","margin":0.08037848438323224,"publishable":false,"withheld":"implausible","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9231680487392113,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Cloudbet","game":"Big Bass Bonanza","provider":"pragmatic play","bets":5322,"observed_return":0.29208944006012827,"declared_rtp":null,"gap":null,"std_error":0.03584481006750417,"ci95":[0.22183361232782012,0.3623452677924364],"max_multiplier":161.5,"confidence":"moderate","margin":0.07025582773230817,"publishable":false,"withheld":"implausible","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9252160841788801,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Roobet","game":"Big Bass Bonanza 1000","provider":"pragmatic play","bets":4625,"observed_return":1.085024047810083,"declared_rtp":null,"gap":null,"std_error":0.24814097251934433,"ci95":[0.5986677416721682,1.5713803539479978],"max_multiplier":1049.2,"confidence":"moderate","margin":0.48635630613791486,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.916972972972973,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Roobet","game":"Big Bass Bonanza","provider":"pragmatic play","bets":2434,"observed_return":0.7758809970348192,"declared_rtp":null,"gap":null,"std_error":0.13231728555695718,"ci95":[0.516539117343183,1.0352228767264553],"max_multiplier":154.5,"confidence":"moderate","margin":0.2593418796916361,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9124897288414133,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Roobet","game":"Christmas Big Bass Bonanza","provider":"pragmatic play","bets":1566,"observed_return":1.3049173219434178,"declared_rtp":null,"gap":null,"std_error":0.25577260761254417,"ci95":[0.8036030110228313,1.8062316328640042],"max_multiplier":287.5,"confidence":"moderate","margin":0.5013143109205865,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9016602809706258,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Shuffle","game":"Big Bass Bonanza 1000","provider":"unknown","bets":1142,"observed_return":0.8246294026075107,"declared_rtp":null,"gap":null,"std_error":0.12772990669899556,"ci95":[0.5742787854774793,1.074980019737542],"max_multiplier":74.2,"confidence":"moderate","margin":0.2503506171300313,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8905429071803853,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Winna","game":"Big Bass Bonanza 1000","provider":"pragmatic play","bets":555,"observed_return":1.9318365945945946,"declared_rtp":null,"gap":null,"std_error":0.30202679868067694,"ci95":[1.3398640691804677,2.523809120008721],"max_multiplier":114.2,"confidence":"low","margin":0.5919725254141268,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.6666666666666666,"feed_bias":"curated","observed_return_note":"This feed publishes more wins than it publishes losses, proven by an observed return above 100%. Read it as a floor on the operator's curation, not as the game's return.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Shuffle","game":"Big Bass Bonanza","provider":"unknown","bets":486,"observed_return":0.925925925925926,"declared_rtp":null,"gap":null,"std_error":0.27967900899514214,"ci95":[0.37775506829544747,1.4740967835564045],"max_multiplier":83.5,"confidence":"low","margin":0.5481708576304786,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9032921810699589,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Roobet","game":"Big Bass Bonanza 3 Reeler","provider":"pragmatic play","bets":414,"observed_return":1.2235789049919483,"declared_rtp":null,"gap":null,"std_error":0.3647314257495766,"ci95":[0.5087053105227781,1.9384524994611185],"max_multiplier":85.99999999999999,"confidence":"low","margin":0.7148735944691702,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8985507246376812,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Winna","game":"Big Bass Bonanza","provider":"pragmatic play","bets":364,"observed_return":2.339334423076923,"declared_rtp":null,"gap":null,"std_error":0.38202220891331073,"ci95":[1.590570893606834,3.088097952547012],"max_multiplier":50.50611,"confidence":"low","margin":0.7487635294700891,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.6675824175824175,"feed_bias":"curated","observed_return_note":"This feed publishes more wins than it publishes losses, proven by an observed return above 100%. Read it as a floor on the operator's curation, not as the game's return.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Cloudbet","game":"Big Bass Bonanza 3 Reeler","provider":"pragmatic play","bets":198,"observed_return":0.10353535353535354,"declared_rtp":null,"gap":null,"std_error":0.037987040498253875,"ci95":[0.029080754158775937,0.17798995291193115],"max_multiplier":6.666666666666667,"confidence":"low","margin":0.0744545993765776,"publishable":false,"withheld":"implausible","diverges_from_declared":null,"window":{"from":"2026-09-19","to":"2026-09-20"},"published_loss_share":0.9595959595959596,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Roobet","game":"Big Bass Bonanza - Reel Action","provider":"pragmatic play","bets":182,"observed_return":0.521978021978022,"declared_rtp":null,"gap":null,"std_error":0.196715649498629,"ci95":[0.13641534896070917,0.9075406949953349],"max_multiplier":30.333333333333332,"confidence":"low","margin":0.38556267301731284,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9120879120879121,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Winna","game":"Christmas Big Bass Bonanza","provider":"pragmatic play","bets":158,"observed_return":3.0416322151898734,"declared_rtp":null,"gap":null,"std_error":1.2123905337020657,"ci95":[0.6653467691338246,5.417917661245922],"max_multiplier":160.91269,"confidence":"low","margin":2.3762854460560487,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.6455696202531646,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Roobet","game":"Big Bass Bonanza - Keeping it Reel","provider":"pragmatic play","bets":156,"observed_return":1.2241451985683192,"declared_rtp":null,"gap":null,"std_error":0.5791394862925942,"ci95":[0.08903180543483469,2.3592585917018036],"max_multiplier":80.89999999999999,"confidence":"low","margin":1.1351133931334845,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9038461538461539,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"BC.Game","game":"Big Bass Bonanza","provider":"pragmatic play","bets":122,"observed_return":0.8893446049127408,"declared_rtp":null,"gap":null,"std_error":0.531603747163791,"ci95":[-0.15259873952828962,1.9312879493537713],"max_multiplier":58.00000000000001,"confidence":"low","margin":1.0419433444410304,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9098360655737705,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Winna","game":"Big Bass Bonanza Megaways","provider":"pragmatic play","bets":103,"observed_return":0.46114737864077665,"declared_rtp":null,"gap":null,"std_error":0.19489525745021397,"ci95":[0.0791526740383573,0.843142083243196],"max_multiplier":16.89997,"confidence":"low","margin":0.38199470460241935,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-18","to":"2026-09-20"},"published_loss_share":0.8932038834951457,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"BC.Game","game":"Big Bass Bonanza 1000","provider":"pragmatic play","bets":100,"observed_return":0.17167351300557812,"declared_rtp":null,"gap":null,"std_error":0.07466459045405767,"ci95":[0.025330915715625096,0.3180161102955311],"max_multiplier":6.666667092000033,"confidence":"low","margin":0.14634259728995302,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.93,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}}]}