{"window_days":7,"from":"2026-09-14","games_returned":9,"games_withheld_below_min_bets":11,"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":"Joker's Jewels","provider":"pragmatic play","bets":3120,"observed_return":0.9416666666666667,"declared_rtp":null,"gap":null,"std_error":0.10593585522061778,"ci95":[0.7340323904342558,1.1493009428990775],"max_multiplier":250,"confidence":"moderate","margin":0.20763427623241085,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8814102564102564,"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":"Joker's Jewels","provider":"pragmatic play","bets":1195,"observed_return":0.7606692889583123,"declared_rtp":null,"gap":null,"std_error":0.08305013055211204,"ci95":[0.5978910330761728,0.9234475448404519],"max_multiplier":39.99999999999999,"confidence":"moderate","margin":0.1627782558821396,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8744769874476988,"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":"Joker's Jewels Cash","provider":"pragmatic play","bets":992,"observed_return":4.1441580947580645,"declared_rtp":null,"gap":null,"std_error":0.39998493273540753,"ci95":[3.360187626596666,4.928128562919463],"max_multiplier":200,"confidence":"low","margin":0.7839704681613987,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.5120967741935484,"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":"Winna","game":"Joker's Jewels","provider":"pragmatic play","bets":490,"observed_return":4.64279712244898,"declared_rtp":null,"gap":null,"std_error":0.6364925488029484,"ci95":[3.395271726795201,5.890322518102758],"max_multiplier":200,"confidence":"low","margin":1.2475253956537788,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-20"},"published_loss_share":0.49183673469387756,"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":"Roobet","game":"Joker's Jewels Hot","provider":"pragmatic play","bets":393,"observed_return":0.7391857506361323,"declared_rtp":null,"gap":null,"std_error":0.15530003454170924,"ci95":[0.43479768293438226,1.0435738183378824],"max_multiplier":37.49999999999999,"confidence":"low","margin":0.3043880677017501,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8676844783715013,"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":"Joker's Jewels","provider":"pragmatic play mexico","bets":380,"observed_return":1.1473684543097529,"declared_rtp":null,"gap":null,"std_error":0.21342977729484555,"ci95":[0.7290460908118557,1.56569081780765],"max_multiplier":40.0000018800001,"confidence":"low","margin":0.41832236349789725,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8552631578947368,"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":"Joker's Jewels Cash","provider":"pragmatic play","bets":328,"observed_return":0.7987804878048781,"declared_rtp":null,"gap":null,"std_error":0.2006347636248662,"ci95":[0.40553635110014036,1.1920246245096158],"max_multiplier":40,"confidence":"low","margin":0.39324413670473773,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8628048780487805,"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":"Joker's Jewels Wild","provider":"pragmatic play","bets":271,"observed_return":0.6088560885608856,"declared_rtp":null,"gap":null,"std_error":0.212507003157736,"ci95":[0.19234236237172303,1.025369814750048],"max_multiplier":40,"confidence":"low","margin":0.41651372618916255,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.922509225092251,"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":"Joker's Jewels","provider":"pragmatic play","bets":174,"observed_return":0.9137931424554814,"declared_rtp":null,"gap":null,"std_error":0.29042653240136646,"ci95":[0.34455713894880313,1.4830291459621596],"max_multiplier":40.000000672226975,"confidence":"low","margin":0.5692360035066782,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.867816091954023,"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}}]}