--- title: "Gas Mask case on Clash.gg: odds, RTP & drops · gambatracker" description: "Gas Mask ($14.39) on Clash.gg, a CS2 case site: advertised RTP 89.99% from 8 items with odds, observed 91.21% over 905 openings in 30 days." url: https://gambatracker.com/cases/clash/gas-mask rendered: 2026-11-11T18:27Z --- [Case sites](https://gambatracker.com/case-sites) / [Clash.gg](https://gambatracker.com/case-sites/clash) / [Gas Mask](https://gambatracker.com/cases/clash/gas-mask) # [Clash.gg](https://gambatracker.com/case-sites/clash) · Gas Mask A case on Clash.gg (classic), first seen 3 Nov 2026. Every value is Clash.gg's own item price converted from Clash gems at the rate on the site page. [24h](https://gambatracker.com/cases/clash/gas-mask?window=24h) [7d](https://gambatracker.com/cases/clash/gas-mask?window=7d) [30d](https://gambatracker.com/cases/clash/gas-mask) [All](https://gambatracker.com/cases/clash/gas-mask?window=all) Price · $14.39 · 22.14 gems Advertised RTP · 89.99% · EV $12.95 from 8 items Observed RTP, 30d · 91.21% · 905 openings, odds method Variance · 1.5× · of price², per opening Tail share · 30.0% · of openings carry half the EV Below price · 70.0% · 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 · 53 openings · below min 7 days · 91.64% ±8.98 717 openings 30 days · 91.21% ±7.99 905 openings since tracking started · 91.21% ±7.99 905 openings 61.0% 94.8% 128.5% ## Windows · the test per window | Window | Openings | Observed | Dev. | Method | | --- | --- | --- | --- | --- | | [24h](https://gambatracker.com/cases/clash/gas-mask?window=24h) | 53 | 94.70% ±33.0 | — | odds | | [7d](https://gambatracker.com/cases/clash/gas-mask?window=7d) | 717 | 91.64% ±8.98 | +0.4σ | odds | | [30d](https://gambatracker.com/cases/clash/gas-mask) | 905 | 91.21% ±7.99 | +0.3σ | odds | | [All](https://gambatracker.com/cases/clash/gas-mask?window=all) | 905 | 91.21% ±7.99 | +0.3σ | odds | Enough sample: 100 openings and 5 expected rare hits (odds method) or 1,000 openings (sample method). ## Items, odds and values · 8 items · odds sum to 1 · observed counts over 907 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 | | --- | --- | --- | --- | --- | --- | --- | | [AK-47 \| Frontside Misty (Factory New) weapon · classified](https://gambatracker.com/items/ak-47-frontside-misty-factory-new) | 30.0% | $39.88 61.36 gems | 92.4% | 276 | 272.1 | 1.01× | | [CZ75-Auto \| Poison Dart (Factory New) weapon · mil spec](https://gambatracker.com/items/cz75-auto-poison-dart-factory-new) | 10.0% | $2.96 4.56 gems | 2.3% | 95 | 90.7 | 1.05× | | [P250 \| Bone Mask (Factory New) weapon · consumer](https://gambatracker.com/items/p250-bone-mask-factory-new) | 10.0% | $2.52 3.87 gems | 1.9% | 92 | 90.7 | 1.01× | | [Glock-18 \| Bunsen Burner (Factory New) weapon · mil spec](https://gambatracker.com/items/glock-18-bunsen-burner-factory-new) | 10.0% | $1.24 1.91 gems | 1.0% | 88 | 90.7 | 0.97× | | [MP9 \| Ruby Poison Dart (Factory New) weapon · restricted](https://gambatracker.com/items/mp9-ruby-poison-dart-factory-new) | 10.0% | $1.16 1.79 gems | 0.9% | 85 | 90.7 | 0.94× | | [XM1014 \| Teclu Burner (Factory New) weapon · Mythical](https://gambatracker.com/items/xm1014-teclu-burner-factory-new) | 10.0% | $1.10 1.69 gems | 0.8% | 99 | 90.7 | 1.09× | | [MP9 \| Deadly Poison (Factory New) weapon · mil spec](https://gambatracker.com/items/mp9-deadly-poison-factory-new) | 10.0% | $0.79 1.22 gems | 0.6% | 96 | 90.7 | 1.06× | | [R8 Revolver \| Bone Mask (Factory New) weapon · #B0C3D9](https://gambatracker.com/items/r8-revolver-bone-mask-factory-new) | 10.0% | $0.07 0.11 gems | 0.1% | 76 | 90.7 | 0.84× | Values are Clash.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. Odds read from `clash:api/cases/details`, 11 Nov, 17:55 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=clash&case=gas-mask) [MP9 | Deadly Poison (Factory New) weapon · mil spec](https://gambatracker.com/items/mp9-deadly-poison-factory-new) Hidden $14.39 22.14 gems $0.79 1.22 gems 0.06x 2026-11-11 15:51 UTC [MP9 | Ruby Poison Dart (Factory New) weapon · restricted](https://gambatracker.com/items/mp9-ruby-poison-dart-factory-new) Hidden $14.39 22.14 gems $1.16 1.79 gems 0.08x 2026-11-11 15:51 UTC [P250 | Bone Mask (Factory New) weapon · consumer](https://gambatracker.com/items/p250-bone-mask-factory-new) Hidden $14.39 22.14 gems $2.52 3.87 gems 0.17x 2026-11-11 15:51 UTC [AK-47 | Frontside Misty (Factory New) weapon · classified](https://gambatracker.com/items/ak-47-frontside-misty-factory-new) Hidden $14.39 22.14 gems $39.88 61.36 gems 2.77x 2026-11-11 15:51 UTC [AK-47 | Frontside Misty (Factory New) weapon · classified](https://gambatracker.com/items/ak-47-frontside-misty-factory-new) Hidden $14.39 22.14 gems $39.88 61.36 gems 2.77x 2026-11-11 15:51 UTC [MP9 | Ruby Poison Dart (Factory New) weapon · restricted](https://gambatracker.com/items/mp9-ruby-poison-dart-factory-new) [squjsh](https://gambatracker.com/players/clash/squjsh) $14.39 22.14 gems $1.16 1.79 gems 0.08x 2026-11-11 15:51 UTC [XM1014 | Teclu Burner (Factory New) weapon · Mythical](https://gambatracker.com/items/xm1014-teclu-burner-factory-new) Hidden $14.39 22.14 gems $1.10 1.69 gems 0.08x 2026-11-11 15:18 UTC [AK-47 | Frontside Misty (Factory New) weapon · classified](https://gambatracker.com/items/ak-47-frontside-misty-factory-new) Hidden $14.39 22.14 gems $39.88 61.36 gems 2.77x 2026-11-11 15:18 UTC [R8 Revolver | Bone Mask (Factory New) weapon · #B0C3D9](https://gambatracker.com/items/r8-revolver-bone-mask-factory-new) [DorkoV](https://gambatracker.com/players/clash/DorkoV) $14.39 22.14 gems $0.07 0.11 gems 0.00x 2026-11-11 15:18 UTC [AK-47 | Frontside Misty (Factory New) weapon · classified](https://gambatracker.com/items/ak-47-frontside-misty-factory-new) Hidden $14.39 22.14 gems $39.88 61.36 gems 2.77x 2026-11-11 15:16 UTC ## Catalog changes · price, advertised RTP and contents, per capture | Captured | Price | Advertised | Items | | --- | --- | --- | --- | | 3 Nov, 02:04 UTC | $14.39 | 89.99% | 8 | Each opening is tested against the capture in force when it happened; a price or odds change starts a new one. listed classified 30.0% mil spec 30.0% consumer 10.0% restricted 10.0% Mythical 10.0% #B0C3D9 10.0% best hit — 18+ **Case opening is gambling with skins as the currency.** At 90.0% RTP, every $100 put into cases returns $89.99 on average: an expected loss of $10.01 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