--- title: "Secret Symphony case on CSGOBig: odds, RTP & drops" description: "Secret Symphony ($13.00) on CSGOBig, a CS2 case site: advertised RTP 89.96% from 6 items with odds, observed 15.00% over 3 openings in 30 days." url: https://gambatracker.com/cases/csgobig/293 rendered: 2026-11-12T19:27Z --- [Case sites](https://gambatracker.com/case-sites) / [CSGOBig](https://gambatracker.com/case-sites/csgobig) / [Secret Symphony](https://gambatracker.com/cases/csgobig/293) # [CSGOBig](https://gambatracker.com/case-sites/csgobig) · Secret Symphony 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/293?window=24h) [7d](https://gambatracker.com/cases/csgobig/293?window=7d) [30d](https://gambatracker.com/cases/csgobig/293) [All](https://gambatracker.com/cases/csgobig/293?window=all) Price · $13.00 · 13 CSGOBIG\_COIN Advertised RTP · 89.96% · EV $11.70 from 6 items Observed RTP, 30d · 15.00% · 3 openings, odds method Variance · 11.1× · of price², per opening Tail share · 1 in 33 · of openings carry half the EV Below price · 90.0% · 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 · 3 openings · below min 7 days · 3 openings · below min 30 days · 3 openings · below min since tracking started · 3 openings · below min -0.5% 195.8% 392.0% **Small sample.** 3 openings and 0.1 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/293?window=24h) | 3 | 15.00% ±376.4 | — | odds | | [7d](https://gambatracker.com/cases/csgobig/293?window=7d) | 3 | 15.00% ±376.4 | — | odds | | [30d](https://gambatracker.com/cases/csgobig/293) | 3 | 15.00% ±376.4 | — | odds | | [All](https://gambatracker.com/cases/csgobig/293?window=all) | 3 | 15.00% ±376.4 | — | odds | Enough sample: 100 openings and 5 expected rare hits (odds method) or 1,000 openings (sample method). ## Items, odds and values · 6 items · odds sum to 1 · observed counts over 3 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 | | --- | --- | --- | --- | --- | --- | --- | | [★ Stiletto Knife \| Slaughter (Factory New) knife · covert](https://gambatracker.com/items/stiletto-knife-slaughter-factory-new) | 1 in 200 | $438 438 CSGOBIG\_COIN | 18.7% | 0 | 0.0 | — | | [AK-47 \| Case Hardened (Minimal Wear) weapon · classified](https://gambatracker.com/items/ak-47-case-hardened-minimal-wear) | 1 in 100 | $230 230 CSGOBIG\_COIN | 19.7% | 0 | 0.0 | — | | [USP-S \| Target Acquired (Factory New) weapon · classified](https://gambatracker.com/items/usp-s-target-acquired-factory-new) | 1 in 67 | $146 146 CSGOBIG\_COIN | 18.7% | 0 | 0.0 | — | | [StatTrak™ Five-SeveN \| Fairy Tale (Factory New) StatTrak · weapon · classified](https://gambatracker.com/items/stattrak-five-seven-fairy-tale-factory-new) | 1 in 40 | $80.00 80 CSGOBIG\_COIN | 17.1% | 0 | 0.1 | — | | [M4A4 \| The Emperor (Minimal Wear) weapon · red](https://gambatracker.com/items/m4a4-the-emperor-minimal-wear) | 1 in 22 | $28.00 28 CSGOBIG\_COIN | 10.8% | 0 | 0.1 | — | | [Sticker \| Bossy Burger sticker · blue](https://gambatracker.com/items/sticker-bossy-burger) | 90.0% | $1.95 1.95 CSGOBIG\_COIN | 15.0% | 3 | 2.7 | 1.11× | 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=293`, 12 Nov, 14:18 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=293) [Sticker | Bossy Burger sticker · blue](https://gambatracker.com/items/sticker-bossy-burger) Hidden $13.00 13 CSGOBIG\_COIN $1.95 1.95 CSGOBIG\_COIN 0.15x 2026-11-12 10:28 UTC [Sticker | Bossy Burger sticker · blue](https://gambatracker.com/items/sticker-bossy-burger) Hidden $13.00 13 CSGOBIG\_COIN $1.95 1.95 CSGOBIG\_COIN 0.15x 2026-11-12 10:28 UTC [Sticker | Bossy Burger sticker · blue](https://gambatracker.com/items/sticker-bossy-burger) Hidden $13.00 13 CSGOBIG\_COIN $1.95 1.95 CSGOBIG\_COIN 0.15x 2026-11-12 10:28 UTC ## Catalog changes · price, advertised RTP and contents, per capture | Captured | Price | Advertised | Items | | --- | --- | --- | --- | | 3 Nov, 04:27 UTC | $13.00 | 89.96% | 6 | Each opening is tested against the capture in force when it happened; a price or odds change starts a new one. listed covert 0.5% classified 5.0% red 4.5% blue 90.0% best hit — 18+ **Case opening is gambling with skins as the currency.** At 90.0% RTP, every $100 put into cases returns $89.96 on average: an expected loss of $10.04 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