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Gamma Case Simulator

Open the Gamma Case free at real Valve drop rates, priced from live market data.

Free Real Odds No Gambling
Opened0
Spent$0.00
Won$0.00
Profit+$0.00
ROI+0.0%
Gamma Case
Gamma Case

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What the Gamma Case is actually worthLive market prices, all wears weighted by how often they drop

Cost per open$5.59
Average return$13.89
Expected gain+$8.30
Return rate248.5%
Expected value contribution by rarity tier
TierChanceAverage valueAdds to return
Mil-Spec79.92%$7.05$5.64
Restricted15.98%$18.90$3.02
Classified3.20%$57.85$1.85
Covert0.64%$121.79$0.78
Knife / Gloves0.26%$999.84$2.60

Every case returns less than it costs — that gap is Valve's margin. Buying the skin you want on the open market is cheaper than unboxing it, every time. See our case opening ROI guide for the full breakdown.

Drop Rates

Mil-Spec79.92%
Restricted15.98%
Classified3.20%
Covert0.64%
Knife/Gloves0.26%

Your odds over multiple opens

A 0.26% knife chance is hard to picture. This is the same number stated the way it is actually experienced — the chance of at least one, over a run of opens.

100 opens costs $559.00 and returns about $1.4K on average — an expected loss of $829.95.

Chance of at least one drop of each tier within 100 opens
TierPer openAt least one in 100Opens for a coin-flip
Mil-Spec79.92%100.00%1
Restricted15.98%100.00%4
Classified3.20%96.13%22
Covert0.64%47.38%108
Knife / Gloves0.26%22.92%267

A coin-flip shot at a knife takes 267 opens — about $1.5Kat this case's price. Even then it is a coin flip, not a guarantee: the odds never carry over between opens. More in our CS2 case odds guide.

Gamma Case Contents47 items

AUG | AristocratAUG | Aristocrat$1.34AWP | PhobosAWP | Phobos$2.02Five-SeveN | Violent DaimyoFive-SeveN | Violent Daimyo$0.46Glock-18 | Wasteland RebelGlock-18 | Wasteland Rebel$117.24M4A1-S | Mecha IndustriesM4A1-S | Mecha Industries$117.51M4A4 | Desolate SpaceM4A4 | Desolate Space$12.83MAC-10 | CarnivoreMAC-10 | Carnivore$0.40Nova | ExoNova | Exo$0.35P2000 | Imperial DragonP2000 | Imperial Dragon$12.68P250 | Iron CladP250 | Iron Clad$0.37P90 | ChopperP90 | Chopper$1.28PP-Bizon | HarvesterPP-Bizon | Harvester$0.41R8 Revolver | RebootR8 Revolver | Reboot$1.37Sawed-Off | LimelightSawed-Off | Limelight$1.32SCAR-20 | BloodsportSCAR-20 | Bloodsport$13.24SG 553 | AerialSG 553 | Aerial$0.37Tec-9 | Ice CapTec-9 | Ice Cap$0.45
Special Items (0.26%)
Bayonet | AutotronicBayonet | Autotronic$265.10Bayonet | Black LaminateBayonet | Black Laminate$161.30Bayonet | Bright WaterBayonet | Bright Water$145.97Bayonet | FreehandBayonet | Freehand$160.21Bayonet | LoreBayonet | Lore$230.69Flip Knife | AutotronicFlip Knife | Autotronic$177.20Flip Knife | Black LaminateFlip Knife | Black Laminate$133.41Flip Knife | Bright WaterFlip Knife | Bright Water$127.11Flip Knife | FreehandFlip Knife | Freehand$128.83Flip Knife | LoreFlip Knife | Lore$159.01Gut Knife | AutotronicGut Knife | Autotronic$96.83Gut Knife | Black LaminateGut Knife | Black Laminate$51.51Gut Knife | Bright WaterGut Knife | Bright Water$52.04Gut Knife | FreehandGut Knife | Freehand$53.84Gut Knife | LoreGut Knife | Lore$81.39Karambit | AutotronicKarambit | Autotronic$949.10Karambit | Black LaminateKarambit | Black Laminate$717.21Karambit | Bright WaterKarambit | Bright Water$491.95Karambit | FreehandKarambit | Freehand$517.31Karambit | LoreKarambit | Lore$597.18M9 Bayonet | AutotronicM9 Bayonet | Autotronic$682.72M9 Bayonet | Black LaminateM9 Bayonet | Black Laminate$505.29M9 Bayonet | Bright WaterM9 Bayonet | Bright Water$346.27M9 Bayonet | FreehandM9 Bayonet | Freehand$378.20M9 Bayonet | LoreM9 Bayonet | Lore$478.00Bayonet | Gamma DopplerBayonet | Gamma Doppler$2.8KFlip Knife | Gamma DopplerFlip Knife | Gamma Doppler$1.6KGut Knife | Gamma DopplerGut Knife | Gamma Doppler$771.36Karambit | Gamma DopplerKarambit | Gamma Doppler$8.9KM9 Bayonet | Gamma DopplerM9 Bayonet | Gamma Doppler$7.8K
Gamma Caseprices & history Trade-up calculator How CS2 case odds work

Opening the Gamma Case

The Gamma Case costs $3.10 for the container plus a $2.49 key — $5.59 per open. At live market prices it returns $13.89 on average, which is 248c back per dollar — an expected gain of $8.30 every time you open one.

It contains 17 weapon skins and 30 special items — knives or gloves — in the 0.26% gold slot. Reaching an even-odds chance at that gold slot takes about 267 opens, roughly $1.5Kat this case's current price. Every skin in the pool is listed above with its live price, and you can open the case as many times as you like here without spending anything.

CS2 Case Drop Rates

Mil-Spec (Blue)79.92%
Restricted (Purple)15.98%
Classified (Pink)3.20%
Covert (Red)0.64%
Knife / Gloves (Gold)0.26%

These odds are the same for every weapon case. They do not improve with streaks and they do not carry over — each open is independent, which is why a run of bad luck never makes the next open more likely to pay.

Frequently Asked Questions

Is the Gamma Case worth opening?

At current market prices the Gamma Case returns about $13.89 per open against a cost of $5.59 ($3.10 for the case plus a $2.49 key). That is 248c back per dollar, an expected gain of $8.30 every time you open one.

What are the odds in the Gamma Case?

Valve confirmed drop rates: Mil-Spec (Blue) 79.92%, Restricted (Purple) 15.98%, Classified (Pink) 3.20%, Covert (Red) 0.64%, Special/Knife/Gloves (Gold) 0.26%. StatTrak has a 10% chance on any weapon skin — gloves have no StatTrak version.

How much does it cost to unbox a knife from the Gamma Case?

The gold slot is 0.26% per open. A 50% chance of hitting one takes about 267 opens, roughly $1.5K at this case’s current price — and that is still a coin flip, not a guarantee.

What is in the Gamma Case?

The Gamma Case contains 17 weapon skins plus 30 rare special items (knives or gloves) in the gold slot. Every item is listed below with its live market price.

Can I open the Gamma Case for free?

Yes. This simulator opens the Gamma Case with real Valve drop rates and live prices, as many times as you like, with no money and no signup. It is a simulator — items are not added to your Steam inventory.

Open another case

Every case has its own simulator page with that case's pool, odds and expected value at current prices.

Related: CS2 case odds explained · Case opening ROI · Trade-up calculator · All case prices