{"window_days":7,"from":"2026-09-14","games_returned":5,"games_withheld_below_min_bets":1,"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":"Mental 2","provider":"nolimit city","bets":4528,"observed_return":0.3557714502518444,"declared_rtp":null,"gap":null,"std_error":0.02466773818183234,"ci95":[0.30742268341545304,0.4041202170882358],"max_multiplier":36.8,"confidence":"moderate","margin":0.04834876683639138,"publishable":false,"withheld":"implausible","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9213780918727915,"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":"Mental 2","provider":"unknown","bets":3556,"observed_return":0.8378699957346238,"declared_rtp":null,"gap":null,"std_error":0.13674630074372848,"ci95":[0.569847246276916,1.1058927451923317],"max_multiplier":257.71428571428567,"confidence":"moderate","margin":0.2680227494577078,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9243532058492688,"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":"Mental 2","provider":"unknown","bets":505,"observed_return":0.9307474330615517,"declared_rtp":null,"gap":null,"std_error":0.1495636984170926,"ci95":[0.6376025841640502,1.2238922819590532],"max_multiplier":38.107142857142854,"confidence":"low","margin":0.2931448488975015,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8574257425742574,"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":"Mental 2","provider":"nolimit city","bets":454,"observed_return":5.031230726872247,"declared_rtp":null,"gap":null,"std_error":1.5647395206489332,"ci95":[1.964341266400338,8.098120187344156],"max_multiplier":490,"confidence":"low","margin":3.066889460471909,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.5462555066079295,"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":"Mental 2","provider":"nolimitcity","bets":206,"observed_return":0.6874087290832341,"declared_rtp":null,"gap":null,"std_error":0.3157269216052985,"ci95":[0.06858396273684908,1.3062334954296193],"max_multiplier":51.80000057191358,"confidence":"low","margin":0.6188247663463851,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.9174757281553398,"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}}]}