--- title: "Obsidian Treasure case on CSGOBig: odds, RTP & drops" description: "Obsidian Treasure ($2.00) on CSGOBig, a CS2 case site: advertised RTP 90.01% from 6 items with odds, observed 68.82% over 37 openings in 30 days." url: https://gambatracker.com/cases/csgobig/135 rendered: 2026-11-11T20:51Z --- [Case sites](https://gambatracker.com/case-sites) / [CSGOBig](https://gambatracker.com/case-sites/csgobig) / [Obsidian Treasure](https://gambatracker.com/cases/csgobig/135) # [CSGOBig](https://gambatracker.com/case-sites/csgobig) · Obsidian Treasure 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/135?window=24h) [7d](https://gambatracker.com/cases/csgobig/135?window=7d) [30d](https://gambatracker.com/cases/csgobig/135) [All](https://gambatracker.com/cases/csgobig/135?window=all) Price · $2.00 · 2 CSGOBIG\_COIN Advertised RTP · 90.01% · EV $1.80 from 6 items Observed RTP, 30d · 68.82% · 37 openings, odds method Variance · 2.6× · of price², per opening Tail share · 36.4% · of openings carry half the EV Below price · 57.0% · 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 · 1 openings · below min 7 days · 37 openings · below min 30 days · 37 openings · below min since tracking started · 37 openings · below min -0.5% 157.8% 316.0% **Small sample.** 37 openings and 13.5 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/135?window=24h) | 1 | 1.50% ±313.9 | — | odds | | [7d](https://gambatracker.com/cases/csgobig/135?window=7d) | 37 | 68.82% ±51.6 | — | odds | | [30d](https://gambatracker.com/cases/csgobig/135) | 37 | 68.82% ±51.6 | — | odds | | [All](https://gambatracker.com/cases/csgobig/135?window=all) | 37 | 68.82% ±51.6 | — | odds | Enough sample: 100 openings and 5 expected rare hits (odds method) or 1,000 openings (sample method). ## Items, odds and values · 6 items · odds sum to 1 · observed counts over 37 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™ P2000 \| Obsidian (Factory New) StatTrak · weapon · restricted](https://gambatracker.com/items/stattrak-p2000-obsidian-factory-new) | 1 in 20 | $15.00 15 CSGOBIG\_COIN | 41.7% | 1 | 1.9 | 0.54× | | [StatTrak™ P2000 \| Obsidian (Battle-Scarred) StatTrak · weapon · restricted](https://gambatracker.com/items/stattrak-p2000-obsidian-battle-scarred) | 31.4% | $2.38 2.38 CSGOBIG\_COIN | 41.5% | 12 | 11.6 | 1.03× | | [P2000 \| Obsidian (Minimal Wear) weapon · restricted](https://gambatracker.com/items/p2000-obsidian-minimal-wear) | 1 in 15 | $2.12 2.12 CSGOBIG\_COIN | 7.8% | 1 | 2.4 | 0.41× | | [P2000 \| Obsidian (Battle-Scarred) weapon · restricted](https://gambatracker.com/items/p2000-obsidian-battle-scarred) | 12.8% | $1.17 1.17 CSGOBIG\_COIN | 8.3% | 4 | 4.7 | 0.84× | | [Souvenir XM1014 \| Hieroglyph (Field-Tested) Souvenir · weapon · #F2F8FF](https://gambatracker.com/items/souvenir-xm1014-hieroglyph-field-tested) | 19.0% | $0.03 0.03 CSGOBIG\_COIN | 0.3% | 9 | 7.0 | 1.28× | | [Nova \| Predator (Well-Worn) weapon · Common](https://gambatracker.com/items/nova-predator-well-worn) | 25.2% | $0.03 0.03 CSGOBIG\_COIN | 0.4% | 10 | 9.3 | 1.07× | 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=135`, 11 Nov, 19:23 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=135) [Souvenir XM1014 | Hieroglyph (Field-Tested) Souvenir · weapon · #F2F8FF](https://gambatracker.com/items/souvenir-xm1014-hieroglyph-field-tested) [just bad](https://gambatracker.com/players/csgobig/just%20bad) $2.00 2 CSGOBIG\_COIN $0.03 0.03 CSGOBIG\_COIN 0.02x 2026-11-11 16:30 UTC [Souvenir XM1014 | Hieroglyph (Field-Tested) Souvenir · weapon · #F2F8FF](https://gambatracker.com/items/souvenir-xm1014-hieroglyph-field-tested) Hidden $2.00 2 CSGOBIG\_COIN $0.03 0.03 CSGOBIG\_COIN 0.02x 2026-11-10 20:29 UTC [P2000 | Obsidian (Battle-Scarred) weapon · restricted](https://gambatracker.com/items/p2000-obsidian-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $1.17 1.17 CSGOBIG\_COIN 0.59x 2026-11-10 05:30 UTC [StatTrak™ P2000 | Obsidian (Battle-Scarred) StatTrak · weapon · restricted](https://gambatracker.com/items/stattrak-p2000-obsidian-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $2.38 2.38 CSGOBIG\_COIN 1.19x 2026-11-10 05:30 UTC [StatTrak™ P2000 | Obsidian (Battle-Scarred) StatTrak · weapon · restricted](https://gambatracker.com/items/stattrak-p2000-obsidian-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $2.38 2.38 CSGOBIG\_COIN 1.19x 2026-11-10 05:30 UTC [Souvenir XM1014 | Hieroglyph (Field-Tested) Souvenir · weapon · #F2F8FF](https://gambatracker.com/items/souvenir-xm1014-hieroglyph-field-tested) Hidden $2.00 2 CSGOBIG\_COIN $0.03 0.03 CSGOBIG\_COIN 0.02x 2026-11-10 05:30 UTC [StatTrak™ P2000 | Obsidian (Battle-Scarred) StatTrak · weapon · restricted](https://gambatracker.com/items/stattrak-p2000-obsidian-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $2.38 2.38 CSGOBIG\_COIN 1.19x 2026-11-10 05:30 UTC [StatTrak™ P2000 | Obsidian (Battle-Scarred) StatTrak · weapon · restricted](https://gambatracker.com/items/stattrak-p2000-obsidian-battle-scarred) [belico7](https://gambatracker.com/players/csgobig/belico7) $2.00 2 CSGOBIG\_COIN $2.38 2.38 CSGOBIG\_COIN 1.19x 2026-11-10 05:30 UTC [StatTrak™ P2000 | Obsidian (Battle-Scarred) StatTrak · weapon · restricted](https://gambatracker.com/items/stattrak-p2000-obsidian-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $2.38 2.38 CSGOBIG\_COIN 1.19x 2026-11-09 22:20 UTC [StatTrak™ P2000 | Obsidian (Battle-Scarred) StatTrak · weapon · restricted](https://gambatracker.com/items/stattrak-p2000-obsidian-battle-scarred) Hidden $2.00 2 CSGOBIG\_COIN $2.38 2.38 CSGOBIG\_COIN 1.19x 2026-11-09 22:20 UTC ## Catalog changes · price, advertised RTP and contents, per capture | Captured | Price | Advertised | Items | | --- | --- | --- | --- | | 3 Nov, 04:27 UTC | $2.00 | 90.01% | 6 | Each opening is tested against the capture in force when it happened; a price or odds change starts a new one. listed restricted 55.8% #F2F8FF 19.0% Common 25.2% best hit — 18+ **Case opening is gambling with skins as the currency.** At 90.0% RTP, every $100 put into cases returns $90.01 on average: an expected loss of $9.99 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