--- title: "Cobalt Master case on CSGOBig: odds, RTP & drops" description: "Cobalt Master ($5.00) on CSGOBig, a CS2 case site: advertised RTP 90.00% from 15 items with odds, observed 67.19% over 80 openings in 30 days." url: https://gambatracker.com/cases/csgobig/129 rendered: 2026-11-11T13:35Z --- [Case sites](https://gambatracker.com/case-sites) / [CSGOBig](https://gambatracker.com/case-sites/csgobig) / [Cobalt Master](https://gambatracker.com/cases/csgobig/129) # [CSGOBig](https://gambatracker.com/case-sites/csgobig) · Cobalt Master 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/129?window=24h) [7d](https://gambatracker.com/cases/csgobig/129?window=7d) [30d](https://gambatracker.com/cases/csgobig/129) [All](https://gambatracker.com/cases/csgobig/129?window=all) Price · $5.00 · 5 CSGOBIG\_COIN Advertised RTP · 90.00% · EV $4.50 from 15 items Observed RTP, 30d · 67.19% · 80 openings, odds method Variance · 9.6× · of price², per opening Tail share · 1 in 21 · of openings carry half the EV Below price · 94.2% · 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 · 9 openings · below min 7 days · 76 openings · below min 30 days · 80 openings · below min since tracking started · 80 openings · below min -0.5% 109.0% 218.5% **Small sample.** 80 openings and 3.8 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/129?window=24h) | 9 | 14.96% ±202.8 | — | odds | | [7d](https://gambatracker.com/cases/csgobig/129?window=7d) | 76 | 70.02% ±69.8 | — | odds | | [30d](https://gambatracker.com/cases/csgobig/129) | 80 | 67.19% ±68.0 | — | odds | | [All](https://gambatracker.com/cases/csgobig/129?window=all) | 80 | 67.19% ±68.0 | — | odds | Enough sample: 100 openings and 5 expected rare hits (odds method) or 1,000 openings (sample method). ## Items, odds and values · 15 items · odds sum to 1 · observed counts over 80 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™ Desert Eagle \| Cobalt Disruption (Minimal Wear) StatTrak · weapon · classified](https://gambatracker.com/items/stattrak-desert-eagle-cobalt-disruption-minimal-wear) | 1 in 100 | $89.33 89.33 CSGOBIG\_COIN | 19.9% | 1 | 0.8 | — | | [StatTrak™ Desert Eagle \| Cobalt Disruption (Field-Tested) StatTrak · weapon · classified](https://gambatracker.com/items/stattrak-desert-eagle-cobalt-disruption-field-tested) | 1 in 26 | $62.00 62 CSGOBIG\_COIN | 52.2% | 1 | 3.0 | 0.33× | | [Desert Eagle \| Cobalt Disruption (Factory New) weapon · classified](https://gambatracker.com/items/desert-eagle-cobalt-disruption-factory-new) | 1 in 103 | $60.18 60.18 CSGOBIG\_COIN | 13.0% | 1 | 0.8 | — | | [StatTrak™ PP-Bizon \| Cobalt Halftone (Well-Worn) StatTrak · weapon · #4B69FF](https://gambatracker.com/items/stattrak-pp-bizon-cobalt-halftone-well-worn) | 1 in 52 | $1.80 1.8 CSGOBIG\_COIN | 0.8% | 1 | 1.5 | 0.65× | | [StatTrak™ MAG-7 \| Cobalt Core (Minimal Wear) StatTrak · weapon · milspec](https://gambatracker.com/items/stattrak-mag-7-cobalt-core-minimal-wear) | 10.4% | $1.38 1.38 CSGOBIG\_COIN | 3.2% | 9 | 8.3 | 1.09× | | [PP-Bizon \| Cobalt Halftone (Minimal Wear) weapon · mil spec](https://gambatracker.com/items/pp-bizon-cobalt-halftone-minimal-wear) | 1 in 11 | $0.98 0.98 CSGOBIG\_COIN | 2.1% | 13 | 7.5 | 1.73× | | [PP-Bizon \| Cobalt Halftone (Field-Tested) weapon · 1](https://gambatracker.com/items/pp-bizon-cobalt-halftone-field-tested) | 13.2% | $0.86 0.86 CSGOBIG\_COIN | 2.5% | 11 | 10.5 | 1.04× | | [MAG-7 \| Cobalt Core (Well-Worn) weapon · milspec](https://gambatracker.com/items/mag-7-cobalt-core-well-worn) | 1 in 12 | $0.60 0.6 CSGOBIG\_COIN | 1.1% | 5 | 6.8 | 0.74× | | [StatTrak™ MAG-7 \| Cobalt Core (Battle-Scarred) StatTrak · weapon · milspec](https://gambatracker.com/items/stattrak-mag-7-cobalt-core-battle-scarred) | 12.2% | $0.55 0.55 CSGOBIG\_COIN | 1.5% | 11 | 9.8 | 1.12× | | [Dual Berettas \| Cobalt Quartz (Factory New) weapon · restricted](https://gambatracker.com/items/dual-berettas-cobalt-quartz-factory-new) | 11.3% | $0.52 0.52 CSGOBIG\_COIN | 1.3% | 5 | 9.0 | 0.55× | | [MAG-7 \| Cobalt Core (Factory New) weapon · mil spec](https://gambatracker.com/items/mag-7-cobalt-core-factory-new) | 1 in 13 | $0.49 0.49 CSGOBIG\_COIN | 0.8% | 6 | 6.0 | 0.99× | | [MAG-7 \| Cobalt Core (Minimal Wear) weapon · mil spec](https://gambatracker.com/items/mag-7-cobalt-core-minimal-wear) | 1 in 18 | $0.46 0.46 CSGOBIG\_COIN | 0.6% | 9 | 4.5 | 1.99× | | [StatTrak™ MAG-7 \| Cobalt Core (Well-Worn) StatTrak · weapon · milspec](https://gambatracker.com/items/stattrak-mag-7-cobalt-core-well-worn) | 1 in 15 | $0.43 0.43 CSGOBIG\_COIN | 0.6% | 2 | 5.3 | 0.38× | | [StatTrak™ MAG-7 \| Cobalt Core (Field-Tested) StatTrak · weapon · milspec](https://gambatracker.com/items/stattrak-mag-7-cobalt-core-field-tested) | 1 in 21 | $0.38 0.38 CSGOBIG\_COIN | 0.4% | 2 | 3.8 | 0.53× | | [MAG-7 \| Cobalt Core (Field-Tested) weapon · Mil Spec Grade](https://gambatracker.com/items/mag-7-cobalt-core-field-tested) | 1 in 35 | $0.16 0.16 CSGOBIG\_COIN | 0.1% | 3 | 2.3 | 1.32× | 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=129`, 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=129) [Dual Berettas | Cobalt Quartz (Factory New) weapon · restricted](https://gambatracker.com/items/dual-berettas-cobalt-quartz-factory-new) Hidden $5.00 5 CSGOBIG\_COIN $0.52 0.52 CSGOBIG\_COIN 0.10x 2026-11-11 12:20 UTC [StatTrak™ MAG-7 | Cobalt Core (Minimal Wear) StatTrak · weapon · milspec](https://gambatracker.com/items/stattrak-mag-7-cobalt-core-minimal-wear) Hidden $5.00 5 CSGOBIG\_COIN $1.38 1.38 CSGOBIG\_COIN 0.28x 2026-11-11 12:20 UTC [PP-Bizon | Cobalt Halftone (Minimal Wear) weapon · mil spec](https://gambatracker.com/items/pp-bizon-cobalt-halftone-minimal-wear) [KING](https://gambatracker.com/players/csgobig/KING) $5.00 5 CSGOBIG\_COIN $0.98 0.98 CSGOBIG\_COIN 0.20x 2026-11-11 12:20 UTC [MAG-7 | Cobalt Core (Well-Worn) weapon · milspec](https://gambatracker.com/items/mag-7-cobalt-core-well-worn) Hidden $5.00 5 CSGOBIG\_COIN $0.60 0.6 CSGOBIG\_COIN 0.12x 2026-11-11 12:20 UTC [MAG-7 | Cobalt Core (Factory New) weapon · mil spec](https://gambatracker.com/items/mag-7-cobalt-core-factory-new) Hidden $5.00 5 CSGOBIG\_COIN $0.49 0.49 CSGOBIG\_COIN 0.10x 2026-11-11 12:20 UTC [MAG-7 | Cobalt Core (Factory New) weapon · mil spec](https://gambatracker.com/items/mag-7-cobalt-core-factory-new) Hidden $5.00 5 CSGOBIG\_COIN $0.49 0.49 CSGOBIG\_COIN 0.10x 2026-11-11 12:20 UTC [StatTrak™ MAG-7 | Cobalt Core (Well-Worn) StatTrak · weapon · milspec](https://gambatracker.com/items/stattrak-mag-7-cobalt-core-well-worn) Hidden $5.00 5 CSGOBIG\_COIN $0.43 0.43 CSGOBIG\_COIN 0.09x 2026-11-10 19:29 UTC [MAG-7 | Cobalt Core (Minimal Wear) weapon · mil spec](https://gambatracker.com/items/mag-7-cobalt-core-minimal-wear) Hidden $5.00 5 CSGOBIG\_COIN $0.46 0.46 CSGOBIG\_COIN 0.09x 2026-11-10 19:29 UTC [StatTrak™ MAG-7 | Cobalt Core (Minimal Wear) StatTrak · weapon · milspec](https://gambatracker.com/items/stattrak-mag-7-cobalt-core-minimal-wear) Hidden $5.00 5 CSGOBIG\_COIN $1.38 1.38 CSGOBIG\_COIN 0.28x 2026-11-10 18:29 UTC [StatTrak™ MAG-7 | Cobalt Core (Field-Tested) StatTrak · weapon · milspec](https://gambatracker.com/items/stattrak-mag-7-cobalt-core-field-tested) Hidden $5.00 5 CSGOBIG\_COIN $0.38 0.38 CSGOBIG\_COIN 0.08x 2026-11-10 02:50 UTC ## Catalog changes · price, advertised RTP and contents, per capture | Captured | Price | Advertised | Items | | --- | --- | --- | --- | | 3 Nov, 04:27 UTC | $5.00 | 90.00% | 15 | Each opening is tested against the capture in force when it happened; a price or odds change starts a new one. listed 1 13.2% classified 5.8% #4B69FF 1.9% milspec 42.4% mil spec 22.6% restricted 11.3% Mil Spec Grade 2.8% 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