--- title: "Rainbow Fever case on CSGOBig: odds, RTP & drops" description: "Rainbow Fever ($527.00) on CSGOBig, a CS2 case site: advertised RTP 90.00% from 15 items with odds. Independent and free, no sign-up." url: https://gambatracker.com/cases/csgobig/336 rendered: 2026-11-11T13:21Z --- [Case sites](https://gambatracker.com/case-sites) / [CSGOBig](https://gambatracker.com/case-sites/csgobig) / [Rainbow Fever](https://gambatracker.com/cases/csgobig/336) # [CSGOBig](https://gambatracker.com/case-sites/csgobig) · Rainbow Fever 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/336?window=24h) [7d](https://gambatracker.com/cases/csgobig/336?window=7d) [30d](https://gambatracker.com/cases/csgobig/336) [All](https://gambatracker.com/cases/csgobig/336?window=all) Price · $527.00 · 527 CSGOBIG\_COIN Advertised RTP · 90.00% · EV $474.29 from 15 items Observed RTP, 30d · — · no counted openings Variance · 12.7× · of price², per opening Tail share · 1 in 40 · of openings carry half the EV Below price · 89.5% · 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/336?window=24h) | 0 | — | — | — | | [7d](https://gambatracker.com/cases/csgobig/336?window=7d) | 0 | — | — | — | | [30d](https://gambatracker.com/cases/csgobig/336) | 0 | — | — | — | | [All](https://gambatracker.com/cases/csgobig/336?window=all) | 0 | — | — | — | 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 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 | | --- | --- | --- | --- | --- | --- | --- | | [Sticker \| Team LDLC.com (Holo) \| Katowice 2014 sticker · remarkable](https://gambatracker.com/items/sticker-team-ldlc-com-holo-katowice-2014) | 1 in 1,000 | $32K 32,000 CSGOBIG\_COIN | 6.7% | 0 | 0.0 | — | | [★ Butterfly Knife \| Gamma Doppler (Factory New) (Emerald) knife · covert · Emerald](https://gambatracker.com/items/butterfly-knife-gamma-doppler-factory-new-emerald) | 1 in 500 | $14K 14,000 CSGOBIG\_COIN | 5.9% | 0 | 0.0 | — | | [★ Butterfly Knife \| Doppler (Factory New) (Sapphire) knife · covert · Sapphire](https://gambatracker.com/items/butterfly-knife-doppler-factory-new-sapphire) | 1 in 333 | $12.2K 12,200 CSGOBIG\_COIN | 7.7% | 0 | 0.0 | — | | [★ StatTrak™ Butterfly Knife \| Doppler (Factory New) (Black Pearl) StatTrak · knife · covert · Black Pearl](https://gambatracker.com/items/stattrak-butterfly-knife-doppler-factory-new-black-pearl) | 1 in 250 | $11K 11,000 CSGOBIG\_COIN | 9.3% | 0 | 0.0 | — | | [★ Butterfly Knife \| Doppler (Factory New) (Ruby) knife · covert · Ruby](https://gambatracker.com/items/butterfly-knife-doppler-factory-new-ruby) | 1 in 200 | $9,600 9,600 CSGOBIG\_COIN | 10.1% | 0 | 0.0 | — | | [M4A4 \| Howl (Factory New) weapon · contraband](https://gambatracker.com/items/m4a4-howl-factory-new) | 1 in 100 | $5,500 5,500 CSGOBIG\_COIN | 11.6% | 0 | 0.0 | — | | [AWP \| Medusa (Factory New) weapon · covert](https://gambatracker.com/items/awp-medusa-factory-new) | 1 in 50 | $4,500 4,500 CSGOBIG\_COIN | 19.0% | 0 | 0.0 | — | | [★ Bayonet \| Doppler (Factory New) (Ruby) knife · covert · Ruby](https://gambatracker.com/items/bayonet-doppler-factory-new-ruby) | 1 in 50 | $3,000 3,000 CSGOBIG\_COIN | 12.7% | 0 | 0.0 | — | | [★ Bowie Knife \| Doppler (Factory New) (Sapphire) knife · covert · Sapphire](https://gambatracker.com/items/bowie-knife-doppler-factory-new-sapphire) | 1 in 25 | $920 920 CSGOBIG\_COIN | 7.8% | 0 | 0.0 | — | | [StatTrak™ Desert Eagle \| Ocean Drive (Factory New) StatTrak · weapon · covert](https://gambatracker.com/items/stattrak-desert-eagle-ocean-drive-factory-new) | 1 in 17 | $370 370 CSGOBIG\_COIN | 4.7% | 0 | 0.0 | — | | [MP9 \| Hot Rod (Minimal Wear) weapon · mil spec](https://gambatracker.com/items/mp9-hot-rod-minimal-wear) | 1 in 13 | $120 120 CSGOBIG\_COIN | 2.0% | 0 | 0.0 | — | | [AWP \| Wildfire (Well-Worn) weapon · covert](https://gambatracker.com/items/awp-wildfire-well-worn) | 10.0% | $48.00 48 CSGOBIG\_COIN | 1.0% | 0 | 0.0 | — | | [USP-S \| Blueprint (Factory New) weapon · mil spec](https://gambatracker.com/items/usp-s-blueprint-factory-new) | 12.0% | $30.00 30 CSGOBIG\_COIN | 0.8% | 0 | 0.0 | — | | [Five-SeveN \| Angry Mob (Factory New) weapon · covert](https://gambatracker.com/items/five-seven-angry-mob-factory-new) | 21.0% | $10.00 10 CSGOBIG\_COIN | 0.4% | 0 | 0.0 | — | | [StatTrak™ Glock-18 \| Moonrise (Factory New) StatTrak · weapon · restricted](https://gambatracker.com/items/stattrak-glock-18-moonrise-factory-new) | 32.5% | $4.90 4.9 CSGOBIG\_COIN | 0.3% | 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=336`, 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=336) **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 | $527 | 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 remarkable 0.1% covert 46.4% contraband 1.0% mil spec 20.0% restricted 32.5% 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