---
title: "20% Treat case on CSGOBig: odds, RTP & drops · gambatracker"
description: "20% Treat ($371.00) on CSGOBig, a CS2 case site: advertised RTP 89.97% from 27 items with odds. Item values at the site’s own prices, biggest and latest drops."
url: https://gambatracker.com/cases/csgobig/1085
rendered: 2026-11-11T13:36Z
---

[Case sites](https://gambatracker.com/case-sites) / [CSGOBig](https://gambatracker.com/case-sites/csgobig) / [20% Treat](https://gambatracker.com/cases/csgobig/1085)

# [CSGOBig](https://gambatracker.com/case-sites/csgobig) · 20% Treat

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/1085?window=24h) [7d](https://gambatracker.com/cases/csgobig/1085?window=7d) [30d](https://gambatracker.com/cases/csgobig/1085) [All](https://gambatracker.com/cases/csgobig/1085?window=all)

Price · $371.00 · 371 CSGOBIG\_COIN

Advertised RTP · 89.97% · EV $333.78 from 27 items

Observed RTP, 30d · — · no counted openings

Variance · 7.8× · of price², per opening

Tail share · 1 in 26 · of openings carry half the EV

Below price · 80.0% · of openings return less than the price

## Advertised vs observed · per window, 95% band and the advertised marker

**No counted openings yet** Openings inside battles and free cases are listed but never counted.

## Windows · the test per window

| Window | Openings | Observed | Dev. | Method |
| --- | --- | --- | --- | --- |
| [24h](https://gambatracker.com/cases/csgobig/1085?window=24h) | 0 | — | — | — |
| [7d](https://gambatracker.com/cases/csgobig/1085?window=7d) | 0 | — | — | — |
| [30d](https://gambatracker.com/cases/csgobig/1085) | 0 | — | — | — |
| [All](https://gambatracker.com/cases/csgobig/1085?window=all) | 0 | — | — | — |

Enough sample: 100 openings and 5 expected rare hits (odds method) or 1,000 openings (sample method).

## Items, odds and values · 27 items · odds sum to 1 · observed counts over 0 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 |
| --- | --- | --- | --- | --- | --- | --- |
| [★ Sport Gloves \| Vice (Factory New) gloves · extraordinary](https://gambatracker.com/items/sport-gloves-vice-factory-new) | 1 in 1,000 | $11.7K 11,682 CSGOBIG\_COIN | 3.5% | 0 | 0.0 | — |
| [★ StatTrak™ Butterfly Knife \| Doppler (Factory New) (Ruby) StatTrak · knife · covert · Ruby](https://gambatracker.com/items/stattrak-butterfly-knife-doppler-factory-new-ruby) | 1 in 1,000 | $9,149 9,149 CSGOBIG\_COIN | 2.7% | 0 | 0.0 | — |
| [★ StatTrak™ Karambit \| Doppler (Factory New) (Sapphire) StatTrak · knife · covert · Sapphire](https://gambatracker.com/items/stattrak-karambit-doppler-factory-new-sapphire) | 1 in 1,000 | $8,445 8,445 CSGOBIG\_COIN | 2.5% | 0 | 0.0 | — |
| [★ Karambit \| Doppler (Factory New) (Ruby) knife · covert · Ruby](https://gambatracker.com/items/karambit-doppler-factory-new-ruby) | 1 in 667 | $8,164 8,164 CSGOBIG\_COIN | 3.7% | 0 | 0.0 | — |
| [★ Sport Gloves \| Arid (Factory New) gloves · extraordinary](https://gambatracker.com/items/sport-gloves-arid-factory-new) | 1 in 500 | $7,585 7,585 CSGOBIG\_COIN | 4.5% | 0 | 0.0 | — |
| [★ Butterfly Knife \| Doppler (Factory New) (Sapphire) knife · covert · Sapphire](https://gambatracker.com/items/butterfly-knife-doppler-factory-new-sapphire) | 1 in 500 | $7,022 7,022 CSGOBIG\_COIN | 4.2% | 0 | 0.0 | — |
| [M4A4 \| Howl (Minimal Wear) weapon · contraband](https://gambatracker.com/items/m4a4-howl-minimal-wear) | 1 in 333 | $5,630 5,630 CSGOBIG\_COIN | 5.1% | 0 | 0.0 | — |
| [★ Butterfly Knife \| Crimson Web (Factory New) knife · knifes](https://gambatracker.com/items/butterfly-knife-crimson-web-factory-new) | 1 in 333 | $4,363 4,363 CSGOBIG\_COIN | 3.9% | 0 | 0.0 | — |
| [★ Bayonet \| Crimson Web (Factory New) knife · Covert](https://gambatracker.com/items/bayonet-crimson-web-factory-new) | 1 in 333 | $3,800 3,800 CSGOBIG\_COIN | 3.4% | 0 | 0.0 | — |
| [★ Butterfly Knife \| Doppler (Factory New) (Phase 2) knife · covert · Phase 2](https://gambatracker.com/items/butterfly-knife-doppler-factory-new-phase-2) | 1 in 200 | $3,512 3,512 CSGOBIG\_COIN | 5.3% | 0 | 0.0 | — |
| [★ Sport Gloves \| Superconductor (Field-Tested) gloves · extraordinary](https://gambatracker.com/items/sport-gloves-superconductor-field-tested) | 1 in 182 | $3,237 3,237 CSGOBIG\_COIN | 5.3% | 0 | 0.0 | — |
| [M4A1-S \| Hot Rod (Factory New) weapon · classified](https://gambatracker.com/items/m4a1-s-hot-rod-factory-new) | 1 in 200 | $2,885 2,885 CSGOBIG\_COIN | 4.3% | 0 | 0.0 | — |
| [★ Specialist Gloves \| Emerald Web (Minimal Wear) gloves · extraordinary](https://gambatracker.com/items/specialist-gloves-emerald-web-minimal-wear) | 1 in 167 | $2,745 2,745 CSGOBIG\_COIN | 4.9% | 0 | 0.0 | — |
| [Glock-18 \| Fade (Factory New) weapon · restricted](https://gambatracker.com/items/glock-18-fade-factory-new) | 1 in 143 | $2,182 2,182 CSGOBIG\_COIN | 4.6% | 0 | 0.0 | — |
| [★ Butterfly Knife \| Fade (Factory New) knife · covert](https://gambatracker.com/items/butterfly-knife-fade-factory-new) | 1 in 125 | $1,897 1,897 CSGOBIG\_COIN | 4.5% | 0 | 0.0 | — |
| [★ Sport Gloves \| Hedge Maze (Battle-Scarred) gloves · extraordinary](https://gambatracker.com/items/sport-gloves-hedge-maze-battle-scarred) | 1 in 111 | $1,689 1,689 CSGOBIG\_COIN | 4.6% | 0 | 0.0 | — |
| [★ M9 Bayonet \| Fade (Minimal Wear) knife · covert](https://gambatracker.com/items/m9-bayonet-fade-minimal-wear) | 1 in 100 | $1,408 1,408 CSGOBIG\_COIN | 4.2% | 0 | 0.0 | — |
| [Sticker \| Team LDLC.com \| Katowice 2014 sticker · high](https://gambatracker.com/items/sticker-team-ldlc-com-katowice-2014) | 1 in 59 | $1,194 1,194 CSGOBIG\_COIN | 6.1% | 0 | 0.0 | — |
| [★ StatTrak™ Karambit \| Doppler (Factory New) StatTrak · knife · covert knife](https://gambatracker.com/items/stattrak-karambit-doppler-factory-new) | 1 in 50 | $957 957 CSGOBIG\_COIN | 5.7% | 0 | 0.0 | — |
| [★ Bayonet \| Gamma Doppler (Factory New) knife · gold](https://gambatracker.com/items/bayonet-gamma-doppler-factory-new) | 1 in 50 | $844 844 CSGOBIG\_COIN | 5.1% | 0 | 0.0 | — |
| [★ M9 Bayonet \| Crimson Web (Minimal Wear) knife · covert](https://gambatracker.com/items/m9-bayonet-crimson-web-minimal-wear) | 1 in 33 | $603 603 CSGOBIG\_COIN | 5.4% | 0 | 0.0 | — |
| [★ Karambit \| Case Hardened (Battle-Scarred) knife · covert](https://gambatracker.com/items/karambit-case-hardened-battle-scarred) | 1 in 25 | $493 493 CSGOBIG\_COIN | 5.9% | 0 | 0.0 | — |
| [Sticker \| Fire Serpent Surf K (Foil) sticker · exotic](https://gambatracker.com/items/sticker-fire-serpent-surf-k-foil) | 15.0% | $2.60 2.6 CSGOBIG\_COIN | 0.1% | 0 | 0.0 | — |
| [Sticker \| Dark Water Surf Ava (Foil) sticker · exotic](https://gambatracker.com/items/sticker-dark-water-surf-ava-foil) | 15.0% | $2.55 2.55 CSGOBIG\_COIN | 0.1% | 0 | 0.0 | — |
| [Sticker \| Hypnotic Surf K (Foil) sticker · exotic](https://gambatracker.com/items/sticker-hypnotic-surf-k-foil) | 15.0% | $2.18 2.18 CSGOBIG\_COIN | 0.1% | 0 | 0.0 | — |
| [Sticker \| Sticker Bomb Surf K (Foil) sticker · exotic](https://gambatracker.com/items/sticker-sticker-bomb-surf-k-foil) | 25.0% | $1.88 1.88 CSGOBIG\_COIN | 0.1% | 0 | 0.0 | — |
| [PP-Bizon Sand Dashed (Battle-Scarred) other · #B0C3D9](https://gambatracker.com/items/pp-bizon-sand-dashed-battle-scarred-2) | 1 in 10 | $0.01 0.01 CSGOBIG\_COIN | 0.0% | 0 | 0.0 | — |

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=1085`, 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=1085)

**No drops yet** No drop from this case seen yet.

## Observed RTP over time · daily, 30 days

No history yet

## Catalog changes · price, advertised RTP and contents, per capture

| Captured | Price | Advertised | Items |
| --- | --- | --- | --- |
| 3 Nov, 04:27 UTC | $371 | 89.97% | 27 |

Each opening is tested against the capture in force when it happened; a price or odds change starts a new one.

listed extraordinary 2.4% covert 9.8% contraband 0.3% knifes 0.3% Covert 0.3% classified 0.5% restricted 0.7% high 1.7% covert knife 2.0% gold 2.0% exotic 70.0% #B0C3D9 10.0%

18+

**Case opening is gambling with skins as the currency.** At 90.0% RTP, every $100 put into cases returns $89.97 on average: an expected loss of $10.03 per $100, before any one lucky or unlucky opening. A big drop here says nothing about the next one.

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How these figures are produced and labelled: https://gambatracker.com/llms.txt