$306.00Horizon Case
$1.25 case + $16.18 key = $17.43
−88% returnOpen free
Operation Hydra Case contents & odds
Every skin the Operation Hydra Case can drop, the odds of each, what it costs to open and what it is worth on average. It first sold on the Steam Community Market on 21 April 2017.
Case price
$24.80
Key
$2.50
Cost to open
$27.30
Expected value
$16.45
Return
−40%
Prices updated 10 November 2026. Key: $2.50 (market, 2 listings). Case price is the lowest listing (2 listings).
About the Operation Hydra Case
The Operation Hydra Case holds 17 weapon skins across four rarities, plus a rare special pool of 24 gloves. The most valuable regular skin is the AWP | Oni Taiji, listed from $197.66 to $514.67 depending on wear. It costs $27.30 to open: $24.80 for the case and $2.50 for the key.
Because the rarity odds are fixed, the Operation Hydra Case comes down to its list of skins. A knife or gloves drop is 0.26% per opening, about 1 in 385; open it 100 times and the chance of at least one is 23%. Want to see how that feels before paying? Try the Operation Hydra Case in the free case simulator, which uses these exact odds, then compare it with every other case on the case odds page.
Operation Hydra Case odds by rarity
Valve's disclosed rates are the same for every weapon case. What differs per case is how many skins share each tier, which sets the chance of each individual skin, and what those skins are worth.
| Rarity | Chance | Skins | Chance per skin | Average skin value | Adds to EV |
|---|---|---|---|---|---|
| Mil-Spec | 79.92% | 7 | 11.417% | $6.29 | $5.03 |
| Restricted | 15.98% | 5 | 3.196% | $26.41 | $4.22 |
| Classified | 3.20% | 3 | 1.067% | $114.14 | $3.65 |
| Covert | 0.64% | 2 | 0.320% | $279.72 | $1.79 |
| Rare special item | 0.26% | 24 | 0.011% | $674.51 | $1.75 |
| Total | 100.00% | $16.45 |
Expected value = sum of each rarity's chance times the average value of its skins. Skin value is the lowest listing at each wear, weighted by how much of the skin's float range falls in that wear, with the 10% StatTrak roll included. Wears with no live listing are left out of the average.
Operation Hydra Case contents
Every skin below can drop. Odds are per opening; a price range is the lowest listing across the wears the skin can come in. Check the exact float range of any skin with the float checker.
Mil-Spec
79.92% for the tier, 11.417% per skin
USP-S
Blueprint
$3.96 to $79.20
11.417% per opening · StatTrak
M4A1-S
Briefing
$3.73 to $45.44
11.417% per opening · StatTrak
Tec-9
Cut Out
$3.09 to $17.97
11.417% per opening · StatTrak
MAG-7
Hard Water
$3.91 to $11.92
11.417% per opening · StatTrak
FAMAS
Macabre
$2.77 to $9.05
11.417% per opening · StatTrak
UMP-45
Metal Flowers
$2.40 to $6.99
11.417% per opening · StatTrak
MAC-10
Aloha
$3.25 to $6.28
11.417% per opening · StatTrak
Restricted
15.98% for the tier, 3.196% per skin
P2000
Woodsman
$15.43 to $84.64
3.196% per opening · StatTrak
AK-47
Orbit Mk01
$21.49 to $71.57
3.196% per opening · StatTrak
SSG 08
Death's Head
$17.97 to $71.34
3.196% per opening · StatTrak
P90
Death Grip
$16.21 to $47.44
3.196% per opening · StatTrak
P250
Red Rock
$16.98 to $41.53
3.196% per opening · StatTrak
Classified
3.20% for the tier, 1.067% per skin
M4A4
Hellfire
$63.54 to $323.99
1.067% per opening · StatTrak
Dual Berettas
Cobra Strike
$36.38 to $108.99
1.067% per opening · StatTrak
Galil AR
Sugar Rush
$41.42 to $103.29
1.067% per opening · StatTrak
Covert
0.64% for the tier, 0.320% per skin
AWP
Oni Taiji
$197.66 to $514.67
0.320% per opening · StatTrak
Five-SeveN
Hyper Beast
$181.87 to $353.97
0.320% per opening · StatTrak
Rare special item
0.26% for the tier, 0.011% per item
★ Sport Gloves
Hedge Maze
$1,875.16 to $28,000.00
0.011% per opening
★ Moto Gloves
Spearmint
$291.57 to $4,800.00
0.011% per opening
★ Sport Gloves
Pandora's Box
$1,943.61 to $4,461.09
0.011% per opening
★ Specialist Gloves
Emerald Web
$293.35 to $4,363.26
0.011% per opening
★ Sport Gloves
Arid
$262.77 to $2,608.28
0.011% per opening
★ Specialist Gloves
Crimson Kimono
$1,016.57 to $2,192.12
0.011% per opening
★ Driver Gloves
Diamondback
$79.71 to $1,874.01
0.011% per opening
★ Driver Gloves
Crimson Weave
$123.53 to $1,699.93
0.011% per opening
★ Moto Gloves
Cool Mint
$130.77 to $1,558.27
0.011% per opening
★ Specialist Gloves
Foundation
$147.75 to $1,499.00
0.011% per opening
★ Sport Gloves
Superconductor
$697.01 to $1,368.00
0.011% per opening
★ Hand Wraps
Slaughter
$174.81 to $1,177.62
0.011% per opening
★ Driver Gloves
Convoy
$65.00 to $1,170.99
0.011% per opening
★ Hand Wraps
Badlands
$77.55 to $1,168.52
0.011% per opening
★ Driver Gloves
Lunar Weave
$80.47 to $966.70
0.011% per opening
★ Hand Wraps
Leather
$183.14 to $832.01
0.011% per opening
★ Moto Gloves
Boom!
$75.74 to $771.99
0.011% per opening
★ Hand Wraps
Spruce DDPAT
$94.10 to $531.60
0.011% per opening
★ Bloodhound Gloves
Charred
$84.21 to $488.90
0.011% per opening
★ Moto Gloves
Eclipse
$77.78 to $487.47
0.011% per opening
★ Bloodhound Gloves
Guerrilla
$65.00 to $464.83
0.011% per opening
★ Bloodhound Gloves
Bronzed
$61.84 to $464.19
0.011% per opening
★ Bloodhound Gloves
Snakebite
$65.31 to $354.16
0.011% per opening
★ Specialist Gloves
Forest DDPAT
$96.52 to $336.52
0.011% per opening
Knives and gloves are the rare special pool: the case never shows which one until it opens, and the pool's average uses the average lowest listing across every item in it. See current glove prices on the cheapest gloves page. “No listing” means nothing is on sale right now.
Other cases
$306.00
$115.00Clutch Case
$0.40 case + $14.26 key = $14.66
−93% returnOpen free
$192.87Spectrum 2 Case
$2.66 case + $24.78 key = $27.44
−92% returnOpen free
$138.89Spectrum Case
$3.12 case + $15.56 key = $18.68
−86% returnOpen free
$352.52Glove Case
$7.59 case + $22.33 key = $29.92
−79% returnOpen free
$171.65Gamma 2 Case
$2.67 case + $18.42 key = $21.09
−87% returnOpen free
See all CS2 cases, or work out what a drop would leave you after Steam's cut with the Steam fee calculator.
FAQ
How much does it cost to open a Operation Hydra Case?
$27.30 at the prices of 10 November 2026: $24.80 for the case plus $2.50 for the key. This case uses its own key, which Valve no longer sells in its store, so the key price is the lowest player listing (2 listings).
What are the odds in the Operation Hydra Case?
Valve's disclosed rates apply: Mil-Spec 79.92%, Restricted 15.98%, Classified 3.20%, Covert 0.64% and a rare special item (gloves) 0.26%. With 7 Mil-Spec skins, each one is about 11.42%.
What is the best skin in the Operation Hydra Case?
Among the regular skins, AWP | Oni Taiji is the most valuable, listed from $197.66 to $514.67 depending on wear. The rare special pool (gloves) holds the biggest prices, up to $28,000.00, at a combined 0.26% chance.
Is the Operation Hydra Case worth opening?
On average, no: one opening is worth about $16.45 in lowest-listing prices against a cost of $27.30, a return of −40%. Selling on Steam takes a 15% fee on top, and the average is carried by very rare drops, so most single openings return less than they cost.
Can I open the Operation Hydra Case for free?
Yes, in the case simulator. It uses this case's real contents, Valve's disclosed rates and the prices on this page, and it spins a reel for each opening. Nothing is bought and nothing is added to a Steam inventory. You can open up to five at once and the session tally shows what the cases and keys would have cost.
Do StatTrak skins drop from this case?
Yes. Any skin that exists as StatTrak has a 10% chance of being StatTrak when it drops. The expected value figures include that.
More CS2 tools
Case SimulatorOpen any CS2 case free with real odds, wear, float and prices.Case Odds & EVOdds per rarity and expected value of every case.Trade-Up CalculatorOdds, output floats, expected value and ROI for any ten-skin contract.Inventory Value CheckerPaste a Steam profile and price every CS2 item in it.Float CheckerDecode an inspect link, or look up any skin's float cap and wear tiers.Steam Market Fee CalculatorWhat a buyer pays and what you keep after Steam's 15% cut.
