{"window_days":7,"from":"2026-09-14","games_returned":5,"games_withheld_below_min_bets":3,"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 Vegas Double Down Deluxe","provider":"pragmatic play","bets":5957,"observed_return":0.39786805438979367,"declared_rtp":null,"gap":null,"std_error":0.05975589927586549,"ci95":[0.2807464918090973,0.5149896169704901],"max_multiplier":200.5,"confidence":"moderate","margin":0.11712156258069636,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-20"},"published_loss_share":0.9264730569078395,"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 Vegas Double Down Deluxe","provider":"pragmatic play","bets":3118,"observed_return":0.843719001319738,"declared_rtp":null,"gap":null,"std_error":0.13599650517325276,"ci95":[0.5771658511801625,1.1102721514593135],"max_multiplier":278.3333333333333,"confidence":"moderate","margin":0.2665531501395754,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9143681847338038,"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 Vegas Double Down Deluxe","provider":"pragmatic play","bets":388,"observed_return":2.724187345360825,"declared_rtp":null,"gap":null,"std_error":0.4857204362186441,"ci95":[1.7721752903722825,3.6761994003493674],"max_multiplier":100.0001,"confidence":"low","margin":0.9520120549885424,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-15","to":"2026-09-21"},"published_loss_share":0.6185567010309279,"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 Vegas Double Down Deluxe","provider":"unknown","bets":140,"observed_return":0.8368380952381058,"declared_rtp":null,"gap":null,"std_error":0.5059757645631265,"ci95":[-0.1548744033056222,1.8285505937818338],"max_multiplier":62.46666666666684,"confidence":"low","margin":0.991712498543728,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9285714285714286,"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 Vegas Double Down Deluxe","provider":"pragmatic play","bets":111,"observed_return":0.6038844340813905,"declared_rtp":null,"gap":null,"std_error":0.2741195817339503,"ci95":[0.06661005388284791,1.1411588142799332],"max_multiplier":22.20000186085107,"confidence":"low","margin":0.5372743801985426,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8738738738738738,"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}}]}