--- title: "Lost Atlantis case on CSGOBig: odds, RTP & drops" description: "Lost Atlantis ($20.00) on CSGOBig, a CS2 case site: advertised RTP 90.00% from 12 items with odds, observed 118.76% over 65 openings in 30 days." url: https://gambatracker.com/cases/csgobig/126 rendered: 2026-11-11T14:03Z --- [Case sites](https://gambatracker.com/case-sites) / [CSGOBig](https://gambatracker.com/case-sites/csgobig) / [Lost Atlantis](https://gambatracker.com/cases/csgobig/126) # [CSGOBig](https://gambatracker.com/case-sites/csgobig) · Lost Atlantis 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/126?window=24h) [7d](https://gambatracker.com/cases/csgobig/126?window=7d) [30d](https://gambatracker.com/cases/csgobig/126) [All](https://gambatracker.com/cases/csgobig/126?window=all) Price · $20.00 · 20 CSGOBIG\_COIN Advertised RTP · 90.00% · EV $18.00 from 12 items Observed RTP, 30d · 118.76% · 65 openings, odds method Variance · 35.5× · of price², per opening Tail share · 1 in 100 · of openings carry half the EV Below price · 83.9% · 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 · 13 openings · below min 7 days · 43 openings · below min 30 days · 65 openings · below min since tracking started · 65 openings · below min -0.5% 175.5% 351.5% **Small sample.** 65 openings and 0.7 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/126?window=24h) | 13 | 26.82% ±324.1 | — | odds | | [7d](https://gambatracker.com/cases/csgobig/126?window=7d) | 43 | 31.43% ±178.2 | — | odds | | [30d](https://gambatracker.com/cases/csgobig/126) | 65 | 118.76% ±144.9 | — | odds | | [All](https://gambatracker.com/cases/csgobig/126?window=all) | 65 | 118.76% ±144.9 | — | odds | Enough sample: 100 openings and 5 expected rare hits (odds method) or 1,000 openings (sample method). ## Items, odds and values · 12 items · odds sum to 1 · observed counts over 73 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 | | --- | --- | --- | --- | --- | --- | --- | | [★ StatTrak™ Butterfly Knife \| Bright Water (Factory New) StatTrak · knife · covert knife](https://gambatracker.com/items/stattrak-butterfly-knife-bright-water-factory-new) | 1 in 100 | $1,198 1,198 CSGOBIG\_COIN | 66.6% | 2 | 0.7 | — | | [Desert Eagle \| Cobalt Disruption (Minimal Wear) weapon · classified](https://gambatracker.com/items/desert-eagle-cobalt-disruption-minimal-wear) | 1 in 22 | $48.39 48.39 CSGOBIG\_COIN | 12.2% | 0 | 3.3 | 0.00× | | [StatTrak™ AWP \| Corticera (Field-Tested) StatTrak · weapon · classified](https://gambatracker.com/items/stattrak-awp-corticera-field-tested) | 1 in 13 | $27.94 27.94 CSGOBIG\_COIN | 11.7% | 8 | 5.5 | 1.46× | | [M4A1-S \| Bright Water (Minimal Wear) weapon · restricted](https://gambatracker.com/items/m4a1-s-bright-water-minimal-wear) | 1 in 33 | $26.78 26.78 CSGOBIG\_COIN | 4.5% | 4 | 2.2 | 1.80× | | [StatTrak™ Tec-9 \| Avalanche (Factory New) StatTrak · weapon · restricted](https://gambatracker.com/items/stattrak-tec-9-avalanche-factory-new) | 1 in 64 | $12.31 12.31 CSGOBIG\_COIN | 1.1% | 1 | 1.1 | 0.88× | | [Glock-18 \| Sacrifice (Factory New) weapon · mil spec](https://gambatracker.com/items/glock-18-sacrifice-factory-new) | 16.4% | $1.99 1.99 CSGOBIG\_COIN | 1.8% | 17 | 12.0 | 1.42× | | [CZ75-Auto \| Midnight Palm (Well-Worn) weapon · uncommon](https://gambatracker.com/items/cz75-auto-midnight-palm-well-worn) | 10.5% | $1.54 1.54 CSGOBIG\_COIN | 0.9% | 7 | 7.7 | 0.91× | | [CZ75-Auto \| Midnight Palm (Factory New) weapon · Uncommon](https://gambatracker.com/items/cz75-auto-midnight-palm-factory-new) | 12.0% | $0.83 0.83 CSGOBIG\_COIN | 0.6% | 11 | 8.7 | 1.26× | | [Dual Berettas \| Cobalt Quartz (Well-Worn) weapon · restricted](https://gambatracker.com/items/dual-berettas-cobalt-quartz-well-worn) | 1 in 11 | $0.56 0.56 CSGOBIG\_COIN | 0.3% | 9 | 6.6 | 1.37× | | [MAC-10 \| Oceanic (Well-Worn) weapon · milspec](https://gambatracker.com/items/mac-10-oceanic-well-worn) | 13.5% | $0.29 0.29 CSGOBIG\_COIN | 0.2% | 5 | 9.8 | 0.51× | | [StatTrak™ P2000 \| Oceanic (Battle-Scarred) StatTrak · weapon · milspec](https://gambatracker.com/items/stattrak-p2000-oceanic-battle-scarred) | 1 in 17 | $0.28 0.28 CSGOBIG\_COIN | 0.1% | 3 | 4.4 | 0.68× | | [MAC-10 \| Oceanic (Field-Tested) weapon · mil spec](https://gambatracker.com/items/mac-10-oceanic-field-tested) | 15.0% | $0.19 0.19 CSGOBIG\_COIN | 0.2% | 6 | 10.9 | 0.55× | 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=126`, 11 Nov, 13:05 UTC. ## Biggest drops · from this case, by value [★ StatTrak™ Butterfly Knife | Bright Water (Factory New) StatTrak · knife · covert knife](https://gambatracker.com/items/stattrak-butterfly-knife-bright-water-factory-new) Hidden $20.00 20 CSGOBIG\_COIN $1,198 1,198 CSGOBIG\_COIN 59.90x 2026-11-04 11:59 UTC [★ StatTrak™ Butterfly Knife | Bright Water (Factory New) StatTrak · knife · covert knife](https://gambatracker.com/items/stattrak-butterfly-knife-bright-water-factory-new) [PetFog](https://gambatracker.com/players/csgobig/PetFog) $20.00 20 CSGOBIG\_COIN $1,198 1,198 CSGOBIG\_COIN 59.90x 2026-11-03 04:49 UTC ## Latest drops · newest first [All Latest drops →](https://gambatracker.com/drops?casino=csgobig&case=126) [CZ75-Auto | Midnight Palm (Factory New) weapon · Uncommon](https://gambatracker.com/items/cz75-auto-midnight-palm-factory-new) Hidden $20.00 20 CSGOBIG\_COIN $0.83 0.83 CSGOBIG\_COIN 0.04x 2026-11-11 12:59 UTC [MAC-10 | Oceanic (Well-Worn) weapon · milspec](https://gambatracker.com/items/mac-10-oceanic-well-worn) Hidden $20.00 20 CSGOBIG\_COIN $0.29 0.29 CSGOBIG\_COIN 0.01x 2026-11-11 12:59 UTC [Glock-18 | Sacrifice (Factory New) weapon · mil spec](https://gambatracker.com/items/glock-18-sacrifice-factory-new) Hidden $20.00 20 CSGOBIG\_COIN $1.99 1.99 CSGOBIG\_COIN 0.10x 2026-11-11 12:59 UTC [MAC-10 | Oceanic (Well-Worn) weapon · milspec](https://gambatracker.com/items/mac-10-oceanic-well-worn) [Firsty91](https://gambatracker.com/players/csgobig/Firsty91) $20.00 20 CSGOBIG\_COIN $0.29 0.29 CSGOBIG\_COIN 0.01x 2026-11-11 12:59 UTC [M4A1-S | Bright Water (Minimal Wear) weapon · restricted](https://gambatracker.com/items/m4a1-s-bright-water-minimal-wear) Hidden $20.00 20 CSGOBIG\_COIN $26.78 26.78 CSGOBIG\_COIN 1.34x 2026-11-11 08:58 UTC [Glock-18 | Sacrifice (Factory New) weapon · mil spec](https://gambatracker.com/items/glock-18-sacrifice-factory-new) Hidden $20.00 20 CSGOBIG\_COIN $1.99 1.99 CSGOBIG\_COIN 0.10x 2026-11-11 08:58 UTC [Dual Berettas | Cobalt Quartz (Well-Worn) weapon · restricted](https://gambatracker.com/items/dual-berettas-cobalt-quartz-well-worn) Hidden $20.00 20 CSGOBIG\_COIN $0.56 0.56 CSGOBIG\_COIN 0.03x 2026-11-11 08:29 UTC [Glock-18 | Sacrifice (Factory New) weapon · mil spec](https://gambatracker.com/items/glock-18-sacrifice-factory-new) Hidden $20.00 20 CSGOBIG\_COIN $1.99 1.99 CSGOBIG\_COIN 0.10x 2026-11-10 18:30 UTC [Glock-18 | Sacrifice (Factory New) weapon · mil spec](https://gambatracker.com/items/glock-18-sacrifice-factory-new) Hidden $20.00 20 CSGOBIG\_COIN $1.99 1.99 CSGOBIG\_COIN 0.10x 2026-11-10 18:30 UTC [StatTrak™ AWP | Corticera (Field-Tested) StatTrak · weapon · classified](https://gambatracker.com/items/stattrak-awp-corticera-field-tested) Hidden $20.00 20 CSGOBIG\_COIN $27.94 27.94 CSGOBIG\_COIN 1.40x 2026-11-10 18:30 UTC ## Catalog changes · price, advertised RTP and contents, per capture | Captured | Price | Advertised | Items | | --- | --- | --- | --- | | 3 Nov, 04:27 UTC | $20.00 | 90.00% | 12 | Each opening is tested against the capture in force when it happened; a price or odds change starts a new one. listed covert knife 1.0% classified 12.0% restricted 13.6% mil spec 31.4% uncommon 10.5% Uncommon 12.0% milspec 19.5% best hit $1,198 (59.90x) 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