--- title: "Biba case on Rain.gg: odds, RTP & drops · gambatracker" description: "Biba ($90.05) on Rain.gg, a CS2 case site: no published odds, observed 84.42% over 7,272 openings in 30 days. Independent and free, no sign-up." url: https://gambatracker.com/cases/rain/biba rendered: 2026-11-11T13:48Z --- [Case sites](https://gambatracker.com/case-sites) / [Rain.gg](https://gambatracker.com/case-sites/rain) / [Biba](https://gambatracker.com/cases/rain/biba) # [Rain.gg](https://gambatracker.com/case-sites/rain) · Biba A case on Rain.gg, first seen 2 Nov 2026. Every value is Rain.gg's own item price converted from Rain coins at the rate on the site page. [24h](https://gambatracker.com/cases/rain/biba?window=24h) [7d](https://gambatracker.com/cases/rain/biba?window=7d) [30d](https://gambatracker.com/cases/rain/biba) [All](https://gambatracker.com/cases/rain/biba?window=all) Price · $90.05 · 129 coins Advertised RTP · — · no catalog Observed RTP, 30d · 84.42% · 7,272 openings, sample method Variance · — · needs odds Tail share · — · needs odds Below price · — · needs odds ## Advertised vs observed · per window, 95% band and the advertised marker observed, 95% band outside band small sample 24 hours · 762 openings · below min 7 days · 83.84% ±13.99 6,340 openings 30 days · 84.42% ±13.25 7,272 openings since tracking started · 84.42% ±13.25 7,272 openings 43.0% 79.3% 115.5% ## Windows · the test per window | Window | Openings | Observed | Dev. | Method | | --- | --- | --- | --- | --- | | [24h](https://gambatracker.com/cases/rain/biba?window=24h) | 762 | 79.25% ±35.4 | — | sample | | [7d](https://gambatracker.com/cases/rain/biba?window=7d) | 6,340 | 83.84% ±14.0 | — | sample | | [30d](https://gambatracker.com/cases/rain/biba) | 7,272 | 84.42% ±13.3 | — | sample | | [All](https://gambatracker.com/cases/rain/biba?window=all) | 7,272 | 84.42% ±13.3 | — | sample | Enough sample: 100 openings and 5 expected rare hits (odds method) or 1,000 openings (sample method). ## Items, odds and values · none published **No catalog** Rain.gg publishes no catalog; the case is known from the drops that named it. Values are Rain.gg's own item prices; EV share = odds × value ÷ EV. Hot / cold compares observed drops of each item with odds × openings; small expected counts are left blank. ## Biggest drops · from this case, by value [AK-47 | Wild Lotus (Factory New) weapon · legendary](https://gambatracker.com/items/ak-47-wild-lotus-factory-new) Hidden $90.05 129 coins $12.1K 17,239 coins 134.0x 2026-11-11 10:26 UTC [AK-47 | Wild Lotus (Factory New) weapon · legendary](https://gambatracker.com/items/ak-47-wild-lotus-factory-new) Hidden $90.05 129 coins $12.1K 17,239 coins 134.0x 2026-11-10 04:38 UTC [AK-47 | Wild Lotus (Factory New) weapon · legendary](https://gambatracker.com/items/ak-47-wild-lotus-factory-new) Hidden $90.05 129 coins $12.1K 17,239 coins 134.0x 2026-11-09 15:39 UTC [AK-47 | Wild Lotus (Factory New) weapon · legendary](https://gambatracker.com/items/ak-47-wild-lotus-factory-new) Hidden $90.05 129 coins $12.1K 17,239 coins 134.0x 2026-11-09 13:43 UTC [AK-47 | Wild Lotus (Factory New) weapon · legendary](https://gambatracker.com/items/ak-47-wild-lotus-factory-new) Hidden $90.05 129 coins $12.1K 17,239 coins 134.0x 2026-11-09 10:49 UTC [AK-47 | Wild Lotus (Factory New) weapon · legendary](https://gambatracker.com/items/ak-47-wild-lotus-factory-new) Hidden $90.05 129 coins $12.1K 17,239 coins 134.0x 2026-11-07 06:21 UTC [AK-47 | Wild Lotus (Factory New) weapon · legendary](https://gambatracker.com/items/ak-47-wild-lotus-factory-new) Hidden $90.05 129 coins $12.1K 17,239 coins 134.0x 2026-11-06 16:28 UTC [AK-47 | Wild Lotus (Factory New) weapon · legendary](https://gambatracker.com/items/ak-47-wild-lotus-factory-new) [Nepix](https://gambatracker.com/players/rain/Nepix) $90.05 129 coins $12.1K 17,239 coins 134.0x 2026-11-06 00:21 UTC [AK-47 | Wild Lotus (Factory New) weapon · legendary](https://gambatracker.com/items/ak-47-wild-lotus-factory-new) Hidden $90.05 129 coins $12.1K 17,239 coins 134.0x 2026-11-05 19:45 UTC [AK-47 | Wild Lotus (Factory New) weapon · legendary](https://gambatracker.com/items/ak-47-wild-lotus-factory-new) Hidden $90.05 129 coins $12.1K 17,239 coins 134.0x 2026-11-05 19:06 UTC ## Latest drops · newest first [All Latest drops →](https://gambatracker.com/drops?casino=rain&case=biba) [Sticker | Liquid Fire (Holo) sticker · remarkable](https://gambatracker.com/items/sticker-liquid-fire-holo) Hidden $90.05 129 coins $22.60 32.28 coins 0.25x 2026-11-11 13:34 UTC [Sticker | Liquid Fire (Holo) sticker · remarkable](https://gambatracker.com/items/sticker-liquid-fire-holo) Hidden $90.05 129 coins $22.60 32.28 coins 0.25x 2026-11-11 13:34 UTC [Sticker | Liquid Fire (Holo) sticker · remarkable](https://gambatracker.com/items/sticker-liquid-fire-holo) Hidden $90.05 129 coins $22.60 32.28 coins 0.25x 2026-11-11 13:34 UTC [Sticker | Liquid Fire (Holo) sticker · remarkable](https://gambatracker.com/items/sticker-liquid-fire-holo) [Hiccupplayz](https://gambatracker.com/players/rain/Hiccupplayz) $90.05 129 coins $22.60 32.28 coins 0.25x 2026-11-11 13:34 UTC [Sticker | Liquid Fire (Holo) sticker · remarkable](https://gambatracker.com/items/sticker-liquid-fire-holo) Hidden $90.05 129 coins $22.60 32.28 coins 0.25x 2026-11-11 13:34 UTC [Sticker | Liquid Fire (Holo) sticker · remarkable](https://gambatracker.com/items/sticker-liquid-fire-holo) Hidden $90.05 129 coins $22.60 32.28 coins 0.25x 2026-11-11 13:34 UTC [★ Specialist Gloves | Emerald Web (Well-Worn) gloves · extraordinary](https://gambatracker.com/items/specialist-gloves-emerald-web-well-worn) Hidden $90.05 129 coins $480 686 coins 5.33x 2026-11-11 13:34 UTC [Sticker | Liquid Fire (Holo) sticker · remarkable](https://gambatracker.com/items/sticker-liquid-fire-holo) [Hiccupplayz](https://gambatracker.com/players/rain/Hiccupplayz) $90.05 129 coins $22.60 32.28 coins 0.25x 2026-11-11 13:34 UTC [Sticker | Liquid Fire (Holo) sticker · remarkable](https://gambatracker.com/items/sticker-liquid-fire-holo) Hidden $90.05 129 coins $22.60 32.28 coins 0.25x 2026-11-11 13:33 UTC [Sticker | Liquid Fire (Holo) sticker · remarkable](https://gambatracker.com/items/sticker-liquid-fire-holo) Hidden $90.05 129 coins $22.60 32.28 coins 0.25x 2026-11-11 13:33 UTC ## Catalog changes · price, advertised RTP and contents, per capture | Captured | Price | Advertised | Items | | --- | --- | --- | --- | Each opening is tested against the capture in force when it happened; a price or odds change starts a new one. listed best hit $12.1K (134.0x) 18+ **Case opening is gambling with skins as the currency.** At 84.4% RTP, every $100 put into cases returns $84.42 on average: an expected loss of $15.58 per $100, before any one lucky or unlucky opening. A big drop here says nothing about the next one. [BeGambleAware](https://www.begambleaware.org/) [Help & limits](https://gambatracker.com/responsible-gambling) How these figures are produced and labelled: https://gambatracker.com/llms.txt