UpdatesOct 10, 20265 min readCS2Sell

CS2 "The Fourth Season" update (January 2026): Harlequin and Achroma drop collections

On January 21, 2026 the weekly care package gained the Harlequin and Achroma collections and lost Safehouse, Dust 2, 2018 Nuke and 2018 Inferno. All 39 new skins, listed by rarity.

On January 21, 2026, the release notes for Valve's "The Fourth Season" update changed which collections the weekly care package draws from. Two all-new collections went in, Harlequin and Achroma, and four older ones came out: Safehouse, Dust 2, the 2018 Nuke Collection and the 2018 Inferno Collection. It was the second change to that list in Valve's release notes, after the Ascent, Boreal and Radiant rotation of March 2025.

What changed in the care package

Prime accounts get a weekly care package after their first rank-up of the week and pick two of four rewards, which can include weapon skins from the collections on this list. Our drop pool guide explains the details.

Valve's announcement didn't name the pair. It said: "One has color and the other one does not. We'll let you figure out which is which." Harlequin is the colourful one, Achroma the black-and-white one. Between them they hold 39 skins:

Collection	Skins	Classified skin	Browse
Harlequin	19	M4A1-S Party Animal	Buy
Achroma	20	AWP The End	Buy

Both have the same shape as the 2025 drop collections: Consumer Grade up to a single Classified skin, with no Covert tier. They are smaller, though. Ascent, Boreal and Radiant had 28 or 29 skins each.

The four removed collections stopped arriving through drops from that day, so the copies already in circulation are all that route will ever produce.

The Harlequin Collection

Classified: M4A1-S | Party Animal
Restricted: AWP | Exothermic, USP-S | Sleeping Potion
Mil-Spec Grade: Five-SeveN | Fraise Crane, Galil AR | Sky Mandala, UMP-45 | Warm Blooded, Zeus x27 | Earth Mandala
Industrial Grade: MP5-SD | Picnic, MP7 | Coral Paisley, SSG 08 | Calligrafaux, Tec-9 | Banana Leaf, XM1014 | XoooM
Consumer Grade: CZ75-Auto | Honey Paisley, FAMAS | Byproduct, MP9 | Bee-Tron, PP-Bizon | Thermal Currents, R8 Revolver | Mauve Aside, SG 553 | Safari Print, Sawed-Off | Crimson Batik

Several of the lower-grade names point to textile and print patterns: two paisleys, two mandalas, a batik and a safari print. According to the Counter-Strike Wiki, the game's localisation files call it the Exuberant Collection.

The Classified skin and both Restricted skins of the Harlequin Collection

The Achroma Collection

Classified: AWP | The End
Restricted: AK-47 | Breakthrough, Glock-18 | Trace Lock
Mil-Spec Grade: AUG | Creep, Desert Eagle | The Daily Deagle, P2000 | Grip Tape, P90 | Aeolian Light
Industrial Grade: FAMAS | Vendetta, M4A4 | Aeolian Dark, MAC-10 | Snow Splash, MP5-SD | Snow Splash, R8 Revolver | Dark Chamber
Consumer Grade: Dual Berettas | Silver Pour, M249 | Sleet, MP9 | Dizzy, Nova | Currents, P250 | Sleet, PP-Bizon | Bizoom, SCAR-20 | Zinc, SSG 08 | Sans Comic

A few finishes come in pairs across two weapons: Aeolian Light on the P90 and Aeolian Dark on the M4A4, Snow Splash on both the MAC-10 and the MP5-SD, and Sleet on the M249 and the P250.

The top three Achroma skins and its Mil-Spec Desert Eagle

The four collections that left

All four removed collections are older map collections, and none of them has a Covert skin:

Safehouse tops out at Restricted, with the M4A1-S | Nitro.
Dust 2 has one Classified skin, the R8 Revolver | Amber Fade, and the P2000 | Amber Fade at Restricted. Valve's notes just say "Dust 2"; the Counter-Strike Wiki takes that to mean the original Dust 2 Collection, not the 2021 one.
2018 Nuke Collection has two Classified skins, the Tec-9 | Remote Control and the M4A1-S | Control Panel.
2018 Inferno Collection has two Classified skins, the Dual Berettas | Twin Turbo and the SG 553 | Integrale.

One top skin from each removed collection: Safehouse, Dust 2, 2018 Nuke and 2018 Inferno

Leaving the drop list doesn't take a skin out of the game. Existing copies keep trading, and lower-grade skins from these collections can still be traded up into their higher grades. What ends is the weekly trickle of new copies from care packages. For how the different routes compare, see collections vs cases.

What it means for collectors

The upper tiers are small. Harlequin and Achroma each have one Classified and two Restricted skins, and everything else sits at Mil-Spec or below.

That matters for trade-up contracts, where ten skins of one grade return one skin of the next grade, picked from a collection of one of the inputs. Ten Restricted inputs from a single one of these collections can only produce its Classified skin, because each collection has just one. The Classified skins can't go into a contract themselves, since they are already the top grade of their collection.

There are no StatTrak versions, as with other drop collections. Souvenir copies exist, though, because the Souvenir-O-Matic that Valve introduced for the Cologne 2026 Major can turn a weapon you own into a Souvenir. Our StatTrak vs Souvenir guide explains how that works.

The rest of the patch

The same release notes started Premier Season Four, put Anubis back into Active Duty in place of Train, cut the price of the MP7, MP5-SD and PP-Bizon, reworked jumping and landing, rotated five community maps in and four out, and added the AK-47 | Aphrodite to the Armory as a Limited Edition item. All of that is covered in our Premier Season Four article.

Where it stands now

None of Valve's release notes up to October 2026 change the care package list again, so Harlequin and Achroma are still on it, along with Ascent, Boreal and Radiant from March 2025. Cases and terminals in the weekly drop are a separate question, covered in our drop pool guide.

The next update covered here is the Dead Hand Collection of March 2026, which brought the second terminal and 22 new gloves.