{"window_days":7,"from":"2026-09-14","games_returned":4,"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":"Magic Mummy Megaways","provider":"bgaming","bets":2333,"observed_return":0.7668666952421775,"declared_rtp":null,"gap":null,"std_error":0.10702639458860679,"ci95":[0.5570949618485083,0.9766384286358468],"max_multiplier":115.2,"confidence":"moderate","margin":0.2097717333936693,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-20"},"published_loss_share":0.909129875696528,"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":"Magic Mummy Megaways","provider":"bgaming","bets":1614,"observed_return":3.6016507744733577,"declared_rtp":null,"gap":null,"std_error":0.23490095405446665,"ci95":[3.141244904526603,4.062056644420112],"max_multiplier":205.79999,"confidence":"moderate","margin":0.46040586994675464,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-15","to":"2026-09-21"},"published_loss_share":0.5179677819083024,"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":"Magic Mummy Megaways","provider":"softswiss","bets":389,"observed_return":0.9812433590402742,"declared_rtp":null,"gap":null,"std_error":0.35615512115943854,"ci95":[0.2831793215677746,1.6793073965127738],"max_multiplier":124.00000000000001,"confidence":"low","margin":0.6980640374724996,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8946015424164524,"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":"Magic Mummy Megaways","provider":"unknown","bets":259,"observed_return":0.39578893178892804,"declared_rtp":null,"gap":null,"std_error":0.08445703638276421,"ci95":[0.2302531404787102,0.5613247230991458],"max_multiplier":15,"confidence":"low","margin":0.16553579131021784,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-14","to":"2026-09-21"},"published_loss_share":0.8764478764478765,"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}}]}