Gamma Case: Skins, Knives & Odds

The Gamma Case was released in 2016 and contains 17 weapon skins plus a rare pool of 30 knives (Doppler-type finishes counted once, with their phases listed).

Below: every skin by rarity, every knife in the rare pool, the odds, and what the case means for trade ups.

All Gamma Case skins

These are the weapon skins that can drop from the Gamma Case, from rarest to most common. Each can also drop as StatTrak.

Covert (2)

Glock-18 | Wasteland RebelCovert

M4A1-S | Mecha IndustriesCovert

Classified (3)

M4A4 | Desolate SpaceClassified

P2000 | Imperial DragonClassified

SCAR-20 | BloodsportClassified

Restricted (5)

AUG | AristocratRestricted

AWP | PhobosRestricted

P90 | ChopperRestricted

R8 Revolver | RebootRestricted

Sawed-Off | LimelightRestricted

Mil-Spec (7)

Five-SeveN | Violent DaimyoMil-Spec

MAC-10 | CarnivoreMil-Spec

Nova | ExoMil-Spec

P250 | Iron CladMil-Spec

PP-Bizon | HarvesterMil-Spec

SG 553 | AerialMil-Spec

Tec-9 | Ice CapMil-Spec

The Covert skins in this case are the inputs for its knife trade up: Glock-18 | Wasteland Rebel, M4A1-S | Mecha Industries.

What knives are in the Gamma Case?

The Gamma Case's rare special pool contains these 5 knives in Gamma finishes:

• Bayonet
• Flip Knife
• Gut Knife
• Karambit
• M9 Bayonet

Each knife comes in the Gamma finishes: Gamma Doppler, Lore, Autotronic, Black Laminate, Bright Water and Freehand.

Bayonet (6)

Bayonet | Gamma DopplerEmerald, Phase 1, Phase 2, Phase 3, Phase 4

Bayonet | Lore

Bayonet | Autotronic

Bayonet | Black Laminate

Bayonet | Freehand

Bayonet | Bright Water

Flip Knife (6)

Flip Knife | Gamma DopplerEmerald, Phase 1, Phase 2, Phase 3, Phase 4

Flip Knife | Lore

Flip Knife | Autotronic

Flip Knife | Black Laminate

Flip Knife | Freehand

Flip Knife | Bright Water

Gut Knife (6)

Gut Knife | Gamma DopplerEmerald, Phase 1, Phase 2, Phase 3, Phase 4

Gut Knife | Lore

Gut Knife | Autotronic

Gut Knife | Black Laminate

Gut Knife | Bright Water

Gut Knife | Freehand

Karambit (6)

Karambit | Gamma DopplerEmerald, Phase 1, Phase 2, Phase 3, Phase 4

Karambit | Lore

Karambit | Autotronic

Karambit | Black Laminate

Karambit | Freehand

Karambit | Bright Water

M9 Bayonet (6)

M9 Bayonet | Gamma DopplerEmerald, Phase 1, Phase 2, Phase 3, Phase 4

M9 Bayonet | Lore

M9 Bayonet | Autotronic

M9 Bayonet | Black Laminate

M9 Bayonet | Bright Water

M9 Bayonet | Freehand

The same rare pool (same items, same finish set) also drops from Gamma 2 Case. Covert skins from those cases lead to the same pool in a trade up.

The same knives in a different finish set come from Chroma Case, Chroma 3 Case, Chroma 2 Case, Revolver Case.

Gamma Case odds

Valve has disclosed the same rarity odds for every standard weapon case. The Gamma Case follows them:

A knife is therefore roughly a 1-in-385 drop, and each case also needs a key. On average that makes unboxing one of the most expensive ways to get a knife. See CS2 case odds explained.

Gamma Case and knife trade ups

Since the October 2025 update, five Covert skins can be traded up into a knife or pair of gloves. The result is drawn from the rare pool of the case your Covert inputs come from. So five Covert skins from the Gamma Case can only give knives from the list above.

That makes the pool's average value the number that matters: a trade up aimed at the best knife in this case can just as easily land on the cheapest one. Mixing Covert skins from different cases splits your odds between their pools.

More: how the knife trade up works and how the output float is calculated.

Is the Gamma Case worth opening?

Opening any case is a paid random draw: most openings return a Mil-Spec worth far less than the case plus key. If you want a specific knife from this pool, buying it outright is almost always cheaper. If you want any knife from the pool, compare the price of five Covert skins from this case against the pool's average value in the calculator.

Browse every case: all CS2 cases and their knives.

Frequently asked questions