{"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":"Cloudbet","game":"Book of Dead","provider":"play n go","bets":12120,"observed_return":0.3573882537063231,"declared_rtp":null,"gap":null,"std_error":0.018477520401645346,"ci95":[0.3211723137190982,0.393604193693548],"max_multiplier":101,"confidence":"high","margin":0.03621593998722488,"publishable":false,"withheld":"implausible","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9095709570957096,"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":"Book of Dead GO Collect","provider":"play n go","bets":458,"observed_return":1.3624454148471616,"declared_rtp":null,"gap":null,"std_error":0.6552286211478825,"ci95":[0.07819731739731206,2.646693512297011],"max_multiplier":283,"confidence":"low","margin":1.2842480974498496,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9104803493449781,"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":"Rich Wilde and the Book of Dead","provider":"play n go","bets":219,"observed_return":2.3523725570776253,"declared_rtp":null,"gap":null,"std_error":0.5508052908821973,"ci95":[1.2727941869485186,3.431950927206732],"max_multiplier":101,"confidence":"low","margin":1.0795783701291066,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-20"},"published_loss_share":0.5981735159817352,"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":"BC.Game","game":"Book of Dead","provider":"play n go","bets":156,"observed_return":0.5441091735739619,"declared_rtp":null,"gap":null,"std_error":0.16281700782702282,"ci95":[0.22498783823299723,0.8632305089149266],"max_multiplier":16.000000148368066,"confidence":"low","margin":0.3191213353409647,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8846153846153846,"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}}]}