--- title: "Ancient Mysteries case on CSGOBig: odds, RTP & drops" description: "Ancient Mysteries ($9.00) on CSGOBig, a CS2 case site: advertised RTP 90.00% from 18 items with odds, observed 80.14% over 7 openings in 30 days." url: https://gambatracker.com/cases/csgobig/75 rendered: 2026-11-11T13:48Z --- [Case sites](https://gambatracker.com/case-sites) / [CSGOBig](https://gambatracker.com/case-sites/csgobig) / [Ancient Mysteries](https://gambatracker.com/cases/csgobig/75) # [CSGOBig](https://gambatracker.com/case-sites/csgobig) · Ancient Mysteries A case on CSGOBig, first seen 3 Nov 2026. Every value is CSGOBig's own item price converted from csgobig coin at the rate on the site page. [24h](https://gambatracker.com/cases/csgobig/75?window=24h) [7d](https://gambatracker.com/cases/csgobig/75?window=7d) [30d](https://gambatracker.com/cases/csgobig/75) [All](https://gambatracker.com/cases/csgobig/75?window=all) Price · $9.00 · 9 CSGOBIG\_COIN Advertised RTP · 90.00% · EV $8.10 from 18 items Observed RTP, 30d · 80.14% · 7 openings, odds method Variance · 1.3× · of price², per opening Tail share · 21.7% · of openings carry half the EV Below price · 75.1% · of openings return less than the price ## Advertised vs observed · per window, 95% band and the advertised marker observed, 95% band advertised outside band small sample 24 hours · 6 openings · below min 7 days · 7 openings · below min 30 days · 7 openings · below min since tracking started · 7 openings · below min -0.5% 89.3% 179.0% **Small sample.** 7 openings and 1.5 expected rare hits: below the 100 openings and 5 hits the test needs, so no verdict. ## Windows · the test per window | Window | Openings | Observed | Dev. | Method | | --- | --- | --- | --- | --- | | [24h](https://gambatracker.com/cases/csgobig/75?window=24h) | 6 | 86.17% ±92.4 | — | odds | | [7d](https://gambatracker.com/cases/csgobig/75?window=7d) | 7 | 80.14% ±85.6 | — | odds | | [30d](https://gambatracker.com/cases/csgobig/75) | 7 | 80.14% ±85.6 | — | odds | | [All](https://gambatracker.com/cases/csgobig/75?window=all) | 7 | 80.14% ±85.6 | — | odds | Enough sample: 100 openings and 5 expected rare hits (odds method) or 1,000 openings (sample method). ## Items, odds and values · 18 items · odds sum to 1 · observed counts over 7 openings, 30 days Share of the expected value, most valuable first; colour is the item's rarity. | Item | Odds | Value | EV share | Observed | Expected | Hot / cold | | --- | --- | --- | --- | --- | --- | --- | | [StatTrak™ AK-47 \| Legion of Anubis (Factory New) StatTrak · weapon · Ancient](https://gambatracker.com/items/stattrak-ak-47-legion-of-anubis-factory-new) | 1 in 100 | $78.35 78.35 CSGOBIG\_COIN | 9.7% | 0 | 0.1 | — | | [USP-S \| Ancient Visions (Field-Tested) weapon · Restricted](https://gambatracker.com/items/usp-s-ancient-visions-field-tested) | 1 in 22 | $28.20 28.2 CSGOBIG\_COIN | 15.8% | 1 | 0.3 | — | | [AK-47 \| Legion of Anubis (Factory New) weapon · Ancient](https://gambatracker.com/items/ak-47-legion-of-anubis-factory-new) | 1 in 13 | $25.39 25.39 CSGOBIG\_COIN | 24.3% | 0 | 0.5 | — | | [PP-Bizon \| Judgement of Anubis (Field-Tested) weapon · covert](https://gambatracker.com/items/pp-bizon-judgement-of-anubis-field-tested) | 1 in 12 | $9.14 9.14 CSGOBIG\_COIN | 9.5% | 0 | 0.6 | — | | [PP-Bizon \| Judgement of Anubis (Well-Worn) weapon · covert](https://gambatracker.com/items/pp-bizon-judgement-of-anubis-well-worn) | 1 in 31 | $9.01 9.01 CSGOBIG\_COIN | 3.6% | 0 | 0.2 | — | | [Sticker \| GODSENT (Gold) \| Stockholm 2021 sticker · #EB4B4B](https://gambatracker.com/items/sticker-godsent-gold-stockholm-2021) | 1 in 11 | $8.19 8.19 CSGOBIG\_COIN | 9.2% | 0 | 0.6 | — | | [PP-Bizon \| Judgement of Anubis (Battle-Scarred) weapon · covert](https://gambatracker.com/items/pp-bizon-judgement-of-anubis-battle-scarred) | 1 in 14 | $6.28 6.28 CSGOBIG\_COIN | 5.5% | 0 | 0.5 | — | | [Paris 2023 Ancient Souvenir Package container · #F2F8FF](https://gambatracker.com/items/paris-2023-ancient-souvenir-package) | 11.0% | $5.99 5.99 CSGOBIG\_COIN | 8.1% | 1 | 0.8 | — | | [Antwerp 2022 Ancient Souvenir Package container · Base Grade](https://gambatracker.com/items/antwerp-2022-ancient-souvenir-package) | 1 in 17 | $3.99 3.99 CSGOBIG\_COIN | 2.9% | 1 | 0.4 | — | | [Paris 2023 Anubis Souvenir Package container · #F2F8FF](https://gambatracker.com/items/paris-2023-anubis-souvenir-package) | 1 in 10 | $3.96 3.96 CSGOBIG\_COIN | 4.7% | 2 | 0.7 | — | | [Rio 2022 Ancient Souvenir Package container · Base Grade](https://gambatracker.com/items/rio-2022-ancient-souvenir-package) | 1 in 15 | $3.34 3.34 CSGOBIG\_COIN | 2.7% | 1 | 0.5 | — | | [Tec-9 \| Mummy's Rot (Minimal Wear) weapon · blue](https://gambatracker.com/items/tec-9-mummys-rot-minimal-wear) | 1 in 39 | $3.31 3.31 CSGOBIG\_COIN | 1.1% | 0 | 0.2 | — | | [MAG-7 \| Petroglyph (Factory New) weapon · violet](https://gambatracker.com/items/mag-7-petroglyph-factory-new) | 1 in 26 | $1.33 1.33 CSGOBIG\_COIN | 0.6% | 0 | 0.3 | — | | [G3SG1 \| Ancient Ritual (Battle-Scarred) weapon · #5E98D9](https://gambatracker.com/items/g3sg1-ancient-ritual-battle-scarred) | 10.3% | $1.30 1.3 CSGOBIG\_COIN | 1.7% | 0 | 0.7 | — | | [G3SG1 \| Ancient Ritual (Field-Tested) weapon · blueLight](https://gambatracker.com/items/g3sg1-ancient-ritual-field-tested) | 1 in 19 | $1.05 1.05 CSGOBIG\_COIN | 0.7% | 1 | 0.4 | — | | [Souvenir G3SG1 \| Ancient Ritual (Field-Tested) Souvenir · weapon · #5E98D9](https://gambatracker.com/items/souvenir-g3sg1-ancient-ritual-field-tested) | 1 in 77 | $0.09 0.09 CSGOBIG\_COIN | 0.0% | 0 | 0.1 | — | | [Tec-9 \| Groundwater (Minimal Wear) weapon · consumer](https://gambatracker.com/items/tec-9-groundwater-minimal-wear) | 1 in 152 | $0.03 0.03 CSGOBIG\_COIN | 0.0% | 0 | 0.0 | — | | [Tec-9 \| Groundwater (Battle-Scarred) weapon · Common](https://gambatracker.com/items/tec-9-groundwater-battle-scarred) | 1 in 51 | $0.03 0.03 CSGOBIG\_COIN | 0.0% | 0 | 0.1 | — | Values are CSGOBig'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. Odds read from `csgobig:api/cases/getDetails?id=75`, 11 Nov, 13:05 UTC. ## Biggest drops · from this case, by value **No drops yet** No drop from this case seen yet. ## Latest drops · newest first [All Latest drops →](https://gambatracker.com/drops?casino=csgobig&case=75) [Paris 2023 Anubis Souvenir Package container · #F2F8FF](https://gambatracker.com/items/paris-2023-anubis-souvenir-package) Hidden $9.00 9 CSGOBIG\_COIN $3.96 3.96 CSGOBIG\_COIN 0.44x 2026-11-10 14:10 UTC [G3SG1 | Ancient Ritual (Field-Tested) weapon · blueLight](https://gambatracker.com/items/g3sg1-ancient-ritual-field-tested) Hidden $9.00 9 CSGOBIG\_COIN $1.05 1.05 CSGOBIG\_COIN 0.12x 2026-11-10 14:10 UTC [Paris 2023 Ancient Souvenir Package container · #F2F8FF](https://gambatracker.com/items/paris-2023-ancient-souvenir-package) Hidden $9.00 9 CSGOBIG\_COIN $5.99 5.99 CSGOBIG\_COIN 0.67x 2026-11-10 14:10 UTC [USP-S | Ancient Visions (Field-Tested) weapon · Restricted](https://gambatracker.com/items/usp-s-ancient-visions-field-tested) Hidden $9.00 9 CSGOBIG\_COIN $28.20 28.2 CSGOBIG\_COIN 3.13x 2026-11-10 14:10 UTC [Antwerp 2022 Ancient Souvenir Package container · Base Grade](https://gambatracker.com/items/antwerp-2022-ancient-souvenir-package) Hidden $9.00 9 CSGOBIG\_COIN $3.99 3.99 CSGOBIG\_COIN 0.44x 2026-11-10 14:10 UTC [Rio 2022 Ancient Souvenir Package container · Base Grade](https://gambatracker.com/items/rio-2022-ancient-souvenir-package) [ERO](https://gambatracker.com/players/csgobig/ERO) $9.00 9 CSGOBIG\_COIN $3.34 3.34 CSGOBIG\_COIN 0.37x 2026-11-10 14:10 UTC [Paris 2023 Anubis Souvenir Package container · #F2F8FF](https://gambatracker.com/items/paris-2023-anubis-souvenir-package) Hidden $9.00 9 CSGOBIG\_COIN $3.96 3.96 CSGOBIG\_COIN 0.44x 2026-11-10 08:49 UTC ## Catalog changes · price, advertised RTP and contents, per capture | Captured | Price | Advertised | Items | | --- | --- | --- | --- | | 3 Nov, 04:27 UTC | $9.00 | 90.00% | 18 | Each opening is tested against the capture in force when it happened; a price or odds change starts a new one. listed Ancient 8.8% Restricted 4.5% covert 18.8% #EB4B4B 9.1% #F2F8FF 20.7% Base Grade 12.3% blue 2.6% violet 3.9% #5E98D9 11.6% blueLight 5.2% consumer 0.7% Common 1.9% best hit — 18+ **Case opening is gambling with skins as the currency.** At 90.0% RTP, every $100 put into cases returns $90.00 on average: an expected loss of $10.00 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