---
title: "Birb case on CSGOBig: odds, RTP & drops · gambatracker"
description: "Birb ($78.44) on CSGOBig, a CS2 case site: advertised RTP 87.50% from 18 items with odds, observed 109.21% over 39 openings in 30 days."
url: https://gambatracker.com/cases/csgobig/10060
rendered: 2026-11-11T15:15Z
---

[Case sites](https://gambatracker.com/case-sites) / [CSGOBig](https://gambatracker.com/case-sites/csgobig) / [Birb](https://gambatracker.com/cases/csgobig/10060)

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

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/10060?window=24h) [7d](https://gambatracker.com/cases/csgobig/10060?window=7d) [30d](https://gambatracker.com/cases/csgobig/10060) [All](https://gambatracker.com/cases/csgobig/10060?window=all)

Price · $78.44 · 78.44 CSGOBIG\_COIN

Advertised RTP · 87.50% · EV $68.64 from 18 items

Observed RTP, 30d · 109.21% · 39 openings, odds method

Variance · 15.6× · of price², per opening

Tail share · 1 in 33 · of openings carry half the EV

Below price · 85.0% · 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 · 12 openings · below min

7 days · 27 openings · below min

30 days · 39 openings · below min

since tracking started · 39 openings · below min

-0.5% 165.3% 331.0%

**Small sample.** 39 openings and 1.2 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/10060?window=24h) | 12 | 106.48% ±223.7 | — | odds |
| [7d](https://gambatracker.com/cases/csgobig/10060?window=7d) | 27 | 55.32% ±149.1 | — | odds |
| [30d](https://gambatracker.com/cases/csgobig/10060) | 39 | 109.21% ±124.1 | — | odds |
| [All](https://gambatracker.com/cases/csgobig/10060?window=all) | 39 | 109.21% ±124.1 | — | 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 39 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 |
| --- | --- | --- | --- | --- | --- | --- |
| [AWP \| Dragon Lore (Factory New) weapon · covert](https://gambatracker.com/items/awp-dragon-lore-factory-new) | 1 in 10,000 | $12K 12,000 CSGOBIG\_COIN | 1.7% | 0 | 0.0 | — |
| [AWP \| Gungnir (Field-Tested) weapon · covert](https://gambatracker.com/items/awp-gungnir-field-tested) | 1 in 10,000 | $8,989 8,989 CSGOBIG\_COIN | 1.3% | 0 | 0.0 | — |
| [AK-47 \| Wild Lotus (Well-Worn) weapon · covert](https://gambatracker.com/items/ak-47-wild-lotus-well-worn) | 1 in 10,000 | $6,623 6,623 CSGOBIG\_COIN | 1.0% | 0 | 0.0 | — |
| [★ Talon Knife \| Doppler (Factory New) (Ruby) knife · covert · Ruby](https://gambatracker.com/items/talon-knife-doppler-factory-new-ruby) | 1 in 10,000 | $5,393 5,393 CSGOBIG\_COIN | 0.8% | 0 | 0.0 | — |
| [AWP \| Medusa (Factory New) weapon · covert](https://gambatracker.com/items/awp-medusa-factory-new) | 1 in 10,000 | $4,561 4,561 CSGOBIG\_COIN | 0.7% | 0 | 0.0 | — |
| [★ StatTrak™ Butterfly Knife \| Fade (Factory New) StatTrak · knife · legendary](https://gambatracker.com/items/stattrak-butterfly-knife-fade-factory-new) | 1 in 2,000 | $3,648 3,648 CSGOBIG\_COIN | 2.7% | 0 | 0.0 | — |
| [AWP \| The Prince (Factory New) weapon · covert](https://gambatracker.com/items/awp-the-prince-factory-new) | 1 in 1,000 | $3,350 3,350 CSGOBIG\_COIN | 4.9% | 0 | 0.0 | — |
| [★ Bayonet \| Doppler (Minimal Wear) (Ruby) knife · covert · Ruby](https://gambatracker.com/items/bayonet-doppler-minimal-wear-ruby) | 1 in 333 | $2,483 2,483 CSGOBIG\_COIN | 10.9% | 0 | 0.1 | — |
| [★ StatTrak™ Ursus Knife \| Doppler (Factory New) (Ruby) StatTrak · knife · #EB4B4B · Ruby](https://gambatracker.com/items/stattrak-ursus-knife-doppler-factory-new-ruby) | 1 in 200 | $1,577 1,577 CSGOBIG\_COIN | 11.5% | 1 | 0.2 | — |
| [AWP \| Fade (Minimal Wear) weapon · covert](https://gambatracker.com/items/awp-fade-minimal-wear) | 1 in 100 | $939 939 CSGOBIG\_COIN | 13.7% | 0 | 0.4 | — |
| [★ Bayonet \| Marble Fade (Factory New) knife · covert](https://gambatracker.com/items/bayonet-marble-fade-factory-new) | 1 in 100 | $606 606 CSGOBIG\_COIN | 8.8% | 0 | 0.4 | — |
| [★ Flip Knife \| Marble Fade (Factory New) knife · covert](https://gambatracker.com/items/flip-knife-marble-fade-factory-new) | 1 in 50 | $469 469 CSGOBIG\_COIN | 13.7% | 2 | 0.8 | — |
| [StatTrak™ AK-47 \| Bloodsport (Minimal Wear) StatTrak · weapon · covert](https://gambatracker.com/items/stattrak-ak-47-bloodsport-minimal-wear) | 1 in 50 | $290 290 CSGOBIG\_COIN | 8.5% | 1 | 0.8 | — |
| [StatTrak™ SSG 08 \| Blood in the Water (Minimal Wear) StatTrak · weapon · Covert](https://gambatracker.com/items/stattrak-ssg-08-blood-in-the-water-minimal-wear) | 1 in 33 | $164 164 CSGOBIG\_COIN | 7.2% | 1 | 1.2 | 0.85× |
| [Tec-9 \| Nuclear Threat (Minimal Wear) weapon · restricted](https://gambatracker.com/items/tec-9-nuclear-threat-minimal-wear) | 1 in 20 | $120 120 CSGOBIG\_COIN | 8.7% | 3 | 2.0 | 1.54× |
| [StatTrak™ Glock-18 \| Bullet Queen (Minimal Wear) StatTrak · weapon · covert](https://gambatracker.com/items/stattrak-glock-18-bullet-queen-minimal-wear) | 1 in 20 | $50.00 50 CSGOBIG\_COIN | 3.6% | 0 | 2.0 | 0.00× |
| [Sticker \| Baby Medusa sticker · high](https://gambatracker.com/items/sticker-baby-medusa) | 40.0% | $0.49 0.49 CSGOBIG\_COIN | 0.3% | 12 | 15.6 | 0.77× |
| [Sticker \| Go Boom (Glitter) sticker · remarkable](https://gambatracker.com/items/sticker-go-boom-glitter) | 40.0% | $0.32 0.32 CSGOBIG\_COIN | 0.2% | 19 | 15.6 | 1.22× |

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=10060`, 11 Nov, 13:05 UTC.

## Biggest drops · from this case, by value

[★ StatTrak™ Ursus Knife | Doppler (Factory New) (Ruby) StatTrak · knife · #EB4B4B · Ruby](https://gambatracker.com/items/stattrak-ursus-knife-doppler-factory-new-ruby) [torVic!](https://gambatracker.com/players/csgobig/torVic!) $78.44 78.44 CSGOBIG\_COIN $1,577 1,577 CSGOBIG\_COIN 20.10x 2026-11-03 16:49 UTC

## Latest drops · newest first

[All Latest drops →](https://gambatracker.com/drops?casino=csgobig&case=10060)

[Tec-9 | Nuclear Threat (Minimal Wear) weapon · restricted](https://gambatracker.com/items/tec-9-nuclear-threat-minimal-wear) Hidden $78.44 78.44 CSGOBIG\_COIN $120 120 CSGOBIG\_COIN 1.53x 2026-11-11 00:50 UTC

[Tec-9 | Nuclear Threat (Minimal Wear) weapon · restricted](https://gambatracker.com/items/tec-9-nuclear-threat-minimal-wear) Hidden $78.44 78.44 CSGOBIG\_COIN $120 120 CSGOBIG\_COIN 1.53x 2026-11-11 00:50 UTC

[Sticker | Baby Medusa sticker · high](https://gambatracker.com/items/sticker-baby-medusa) Hidden $78.44 78.44 CSGOBIG\_COIN $0.49 0.49 CSGOBIG\_COIN 0.01x 2026-11-11 00:50 UTC

[Sticker | Go Boom (Glitter) sticker · remarkable](https://gambatracker.com/items/sticker-go-boom-glitter) Hidden $78.44 78.44 CSGOBIG\_COIN $0.32 0.32 CSGOBIG\_COIN 0.00x 2026-11-11 00:50 UTC

[★ Flip Knife | Marble Fade (Factory New) knife · covert](https://gambatracker.com/items/flip-knife-marble-fade-factory-new) Hidden $78.44 78.44 CSGOBIG\_COIN $469 469 CSGOBIG\_COIN 5.98x 2026-11-11 00:50 UTC

[Sticker | Go Boom (Glitter) sticker · remarkable](https://gambatracker.com/items/sticker-go-boom-glitter) Hidden $78.44 78.44 CSGOBIG\_COIN $0.32 0.32 CSGOBIG\_COIN 0.00x 2026-11-11 00:50 UTC

[Sticker | Go Boom (Glitter) sticker · remarkable](https://gambatracker.com/items/sticker-go-boom-glitter) Hidden $78.44 78.44 CSGOBIG\_COIN $0.32 0.32 CSGOBIG\_COIN 0.00x 2026-11-11 00:50 UTC

[Sticker | Baby Medusa sticker · high](https://gambatracker.com/items/sticker-baby-medusa) [Kowaaltsje](https://gambatracker.com/players/csgobig/Kowaaltsje) $78.44 78.44 CSGOBIG\_COIN $0.49 0.49 CSGOBIG\_COIN 0.01x 2026-11-11 00:50 UTC

[Sticker | Baby Medusa sticker · high](https://gambatracker.com/items/sticker-baby-medusa) Hidden $78.44 78.44 CSGOBIG\_COIN $0.49 0.49 CSGOBIG\_COIN 0.01x 2026-11-11 00:50 UTC

[Sticker | Baby Medusa sticker · high](https://gambatracker.com/items/sticker-baby-medusa) Hidden $78.44 78.44 CSGOBIG\_COIN $0.49 0.49 CSGOBIG\_COIN 0.01x 2026-11-11 00:50 UTC

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

| Captured | Price | Advertised | Items |
| --- | --- | --- | --- |
| 3 Nov, 04:27 UTC | $78.44 | 87.50% | 18 |

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

listed covert 11.5% legendary 0.1% #EB4B4B 0.5% Covert 3.0% restricted 5.0% high 40.0% remarkable 40.0% best hit $1,577 (20.10x)

18+

**Case opening is gambling with skins as the currency.** At 87.5% RTP, every $100 put into cases returns $87.50 on average: an expected loss of $12.50 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