About the Gamma Case
Open the Gamma Case for free (released 2016) using the real item pool and Valve's published drop odds. Pick the Gamma Case in the simulator above, spin a single case or bulk-open hundreds, and see what you would really pull: M4A1-S | Mecha Industries and Glock-18 | Wasteland Rebel at Covert, and Bayonet, Flip Knife, Gut Knife, Karambit and more as the Rare Special Item. Nothing costs money and nothing is rigged.
What's inside the Gamma Case
Indicative Steam market prices across wears (Factory New to Battle-Scarred), updated 2026-10-03. StatTrak versions are worth more.
| Rarity | Item | Price range |
|---|---|---|
| Rare Special Item (knife or gloves) | ★ Karambit | Gamma Doppler | $1,791.03 to $1,839.88 |
| Rare Special Item (knife or gloves) | ★ Karambit | Autotronic | $906.24 to $1,800.00 |
| Rare Special Item (knife or gloves) | ★ M9 Bayonet | Gamma Doppler | $1,322.62 to $1,622.88 |
| Rare Special Item (knife or gloves) | ★ M9 Bayonet | Autotronic | $683.16 to $1,500.00 |
| Rare Special Item (knife or gloves) | ★ M9 Bayonet | Lore | $496.27 to $1,482.06 |
| Rare Special Item (knife or gloves) | ★ Karambit | Lore | $562.08 to $1,470.63 |
| Rare Special Item (knife or gloves) | ★ Karambit | Black Laminate | $714.93 to $1,351.42 |
| Rare Special Item (knife or gloves) | ★ M9 Bayonet | Black Laminate | $540.79 to $999.99 |
| Rare Special Item (knife or gloves) | ★ Bayonet | Gamma Doppler | $668.89 to $792.41 |
| Rare Special Item (knife or gloves) | ★ Karambit | Freehand | $557.06 to $786.37 |
| Rare Special Item (knife or gloves) | ★ Bayonet | Autotronic | $292.57 to $717.76 |
| Rare Special Item (knife or gloves) | ★ Karambit | Bright Water | $519.32 to $671.00 |
| Rare Special Item (knife or gloves) | ★ Bayonet | Lore | $245.18 to $596.26 |
| Rare Special Item (knife or gloves) | ★ M9 Bayonet | Freehand | $427.83 to $548.46 |
| Rare Special Item (knife or gloves) | ★ M9 Bayonet | Bright Water | $388.73 to $531.88 |
| Rare Special Item (knife or gloves) | ★ Flip Knife | Gamma Doppler | $501.54 to $531.20 |
| Rare Special Item (knife or gloves) | ★ Flip Knife | Autotronic | $195.80 to $453.26 |
| Rare Special Item (knife or gloves) | ★ Flip Knife | Lore | $197.97 to $325.07 |
| Rare Special Item (knife or gloves) | ★ Bayonet | Black Laminate | $192.23 to $316.25 |
| Rare Special Item (knife or gloves) | ★ Gut Knife | Gamma Doppler | $191.76 to $263.46 |
| Rare Special Item (knife or gloves) | ★ Bayonet | Freehand | $184.00 to $248.82 |
| Rare Special Item (knife or gloves) | ★ Flip Knife | Black Laminate | $153.32 to $239.87 |
| Rare Special Item (knife or gloves) | ★ Gut Knife | Autotronic | $107.47 to $235.24 |
| Rare Special Item (knife or gloves) | ★ Bayonet | Bright Water | $174.78 to $234.15 |
| Rare Special Item (knife or gloves) | ★ Flip Knife | Bright Water | $143.23 to $179.21 |
| Rare Special Item (knife or gloves) | ★ Flip Knife | Freehand | $143.14 to $178.00 |
| Rare Special Item (knife or gloves) | ★ Gut Knife | Black Laminate | $61.11 to $160.12 |
| Rare Special Item (knife or gloves) | ★ Gut Knife | Lore | $92.00 to $155.28 |
| Rare Special Item (knife or gloves) | ★ Gut Knife | Freehand | $69.38 to $86.49 |
| Rare Special Item (knife or gloves) | ★ Gut Knife | Bright Water | $59.32 to $79.40 |
| Covert (red) | M4A1-S | Mecha Industries | $137.24 to $281.89 |
| Covert (red) | Glock-18 | Wasteland Rebel | $137.31 to $169.29 |
| Classified (pink) | M4A4 | Desolate Space | $13.75 to $99.96 |
| Classified (pink) | P2000 | Imperial Dragon | $14.24 to $32.39 |
| Classified (pink) | SCAR-20 | Bloodsport | $13.17 to $18.45 |
| Restricted (purple) | R8 Revolver | Reboot | $1.37 to $9.03 |
| Restricted (purple) | Sawed-Off | Limelight | $1.39 to $7.63 |
| Restricted (purple) | AWP | Phobos | $2.64 to $6.94 |
| Restricted (purple) | AUG | Aristocrat | $1.55 to $4.88 |
| Restricted (purple) | P90 | Chopper | $1.48 to $4.02 |
| Mil-Spec (blue) | P250 | Iron Clad | $0.38 to $8.61 |
| Mil-Spec (blue) | PP-Bizon | Harvester | $0.34 to $5.08 |
| Mil-Spec (blue) | MAC-10 | Carnivore | $0.44 to $3.36 |
| Mil-Spec (blue) | Five-SeveN | Violent Daimyo | $0.49 to $2.78 |
| Mil-Spec (blue) | Tec-9 | Ice Cap | $0.49 to $1.60 |
| Mil-Spec (blue) | SG 553 | Aerial | $0.36 to $0.66 |
| Mil-Spec (blue) | Nova | Exo | $0.33 to $0.61 |
Gamma Case drop odds
These are Valve's official CS2 case odds, used for every open in the simulator:
| Rarity | Chance per open | Items in this case |
|---|---|---|
| Mil-Spec (blue) | 79.92% | 7 |
| Restricted (purple) | 15.98% | 5 |
| Classified (pink) | 3.20% | 3 |
| Covert (red) | 0.64% | 2 |
| Rare Special Item (knife or gloves) | 0.26% | 30 |
Is the Gamma Case worth opening?
Opening one Gamma Case costs about $6.86: $4.36 for the case plus $2.50 for the key. Weighting every item by its real drop chance, wear and the 10% StatTrak chance, the expected value of one open is about $4.23, or roughly 62% of what you spend. Over 100 opens that is an expected loss of around $263.03. Almost all of the value sits in the Covert and knife slots, which together land on just 0.90% of opens, so most real openings return far less than the average. That is why trying it in the simulator first is the smart move.
Gamma Case FAQ
What are the odds of getting a knife from the Gamma Case?
Every Gamma Case open has a 0.26% chance (about 1 in 385) of a Rare Special Item. In this case that means Bayonet, Flip Knife, Gut Knife, Karambit and more. Covert skins drop 0.64% of the time, Classified 3.20%, Restricted 15.98% and Mil-Spec 79.92%.
Is the Gamma Case worth opening?
On average one Gamma Case returns about $4.23 in Steam market value against roughly $6.86 for the case plus a key, about 62% back. Over many opens you should expect to lose money; open it for fun in the simulator first.
What is the best item in the Gamma Case?
The top Covert skin is M4A1-S | Mecha Industries, followed by Glock-18 | Wasteland Rebel. The rarest drops are the Rare Special Items: Bayonet, Flip Knife, Gut Knife, Karambit and more.
Is this Gamma Case simulator free?
Yes. The simulator is free, needs no account and never uses real money or awards real items. It uses the real Gamma Case item pool and Valve's published odds so you can see how opening it really plays out.
Simulate related cases
Ready for real cases?
When the demo is not enough, open real CS2 cases on CaseBattles.gg with provably fair results you can verify, or take on other players in case battles. 18+ only, play responsibly.