{"window_days":7,"from":"2026-09-14","games_returned":4,"games_withheld_below_min_bets":2,"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":"Roobet","game":"Miami Mayhem","provider":"hacksaw","bets":1663,"observed_return":0.6642644555644106,"declared_rtp":null,"gap":null,"std_error":0.10965208547022723,"ci95":[0.44934636804276523,0.879182543086056],"max_multiplier":80.9,"confidence":"moderate","margin":0.21491808752164537,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9049909801563439,"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":"Miami Mayhem","provider":"hacksaw","bets":1268,"observed_return":0.2801640378548896,"declared_rtp":null,"gap":null,"std_error":0.02983039045631079,"ci95":[0.22169647256052044,0.3386316031492587],"max_multiplier":22.4,"confidence":"moderate","margin":0.058467565294369146,"publishable":false,"withheld":"implausible","diverges_from_declared":null,"window":{"from":"2026-09-15","to":"2026-09-21"},"published_loss_share":0.8958990536277602,"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":"Miami Mayhem","provider":"hacksaw","bets":550,"observed_return":2.685525636363636,"declared_rtp":null,"gap":null,"std_error":0.6529936984482072,"ci95":[1.40565798740515,3.965393285322122],"max_multiplier":291.03244,"confidence":"low","margin":1.2798676489584861,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.6727272727272727,"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":"Miami Mayhem","provider":"unknown","bets":194,"observed_return":0.5488264604810997,"declared_rtp":null,"gap":null,"std_error":0.07663722220075586,"ci95":[0.3986175049676183,0.6990354159945812],"max_multiplier":8.84,"confidence":"low","margin":0.15020895551348148,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8556701030927835,"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}}]}