What the Slaughter finish actually is
Slaughter is a red marbled finish applied to several CS2 knife models — Karambits, Bayonets, Butterfly Knives, Gut Knives and more. The artwork is a swirl of deep red blobs over a darker base, and because that swirl is generated rather than fixed, no two Slaughters look exactly alike. That single fact is what turns Slaughter from "just a red knife" into a pattern-collecting game.
Unlike a solid colour or a simple gradient, the value of a Slaughter is not driven mainly by its wear tier. It is driven by where the red lands. Two knives of the same exterior can sit at very different prices purely because one has a tidy, centered red shape and the other has red scattered toward the edges.
How pattern grading works
When a knife is unboxed or traded for, the game assigns a hidden pattern index (also called the paint seed) — a number from 0 to 999. That seed decides exactly how the red marbling is laid out across the model. Change the seed and you change the picture. The float controls how worn the surface looks; the seed controls the composition of the red.
Valve never published a ranking of these seeds, so the grading is community-driven. Traders and collectors catalogue which seeds produce clean, recognisable shapes and which produce messy scatters, then map those into an informal tier list. This is the same idea that drives premiums on other pattern-graded finishes — see our Crimson Web pattern guide and the famous Blue Gem pattern guide for the same mechanic on different skins.
The "Heart" — the most coveted placement
The crown jewel of Slaughter patterns is the Heart: a seed that arranges the red into a clean, heart-shaped blob centered on the playside of the blade. A well-formed, well-centered heart is rare, instantly recognisable, and commands a large premium over an ordinary copy of the same knife and wear. Collectors hunt these specifically, and a clean heart can be worth multiples of a scattered example.
Not every "heart" is equal. Graders look at how complete the shape is, how centered it sits, and whether stray red breaks up the silhouette. A crisp, symmetrical heart with little surrounding noise tops the list; a partial or off-center one ranks lower but still beats a plain scatter.
The "Web" and other top patterns
Just below the Heart sit the Web placements. A Web Slaughter concentrates the red into a tight, concentric arrangement that reads as a web-like cluster rather than loose streaks across the blade. Like the Heart, a Web is desirable because the composition is deliberate-looking and clean rather than random.
Beyond those two named shapes, the broad top tier is simply clean, centered red — patterns where the marbling pools attractively in the middle of the playside instead of bleeding off the edges. Below them sit the common scattered patterns, which make up the bulk of supply and set the floor price for the finish. Those are the copies most players actually buy and run, because they look great in a match without the collector premium.
Why playside matters most
A knife has two faces, but you only ever see one of them held in your hand: the playside. Slaughter grading is judged almost entirely on the playside, because that is where a Heart or Web actually shows in-game. A gorgeous pattern on the back of the blade is wasted if the playside is a plain scatter, and a knife can be "Heart-graded" only when the heart faces the camera.
When you inspect a listing, rotate the model and confirm the desirable shape is on the side that faces you. This is the single most common mistake new Slaughter buyers make — paying a pattern premium for red that's hiding on the wrong face.
Where float fits in
Float still matters on Slaughter, just less than pattern. A low float keeps the red marbling crisp and the surface clean, which lets a Heart or Web show at its best. On a high-float copy the artwork picks up scratches and fading that can muddy an otherwise nice placement. But float alone will never turn a scattered seed into a top-tier knife — pattern leads, float refines. For a full walkthrough of how wear works, see our guide to checking skin float.
How to verify a Slaughter pattern before you buy
Every tradeable knife exposes an in-game inspect link. Open it, rotate to the playside, and read the pattern index (paint seed) shown in most marketplace spec panels and third-party inspectors. Cross-reference that seed against community pattern references to confirm whether you're looking at a Heart, a Web or a common scatter — the same seed always produces the same picture, so a known good seed is a reliable signal. Our how-to-check guide shows exactly where the inspect link and seed live.
On our catalog, each finish lists its wear range and float caps alongside a live multi-market price grid across 41 marketplaces, all valued by our own in-house algorithm rather than any single source. That lets you sanity-check whether a Slaughter's asking price reflects a genuine top-tier pattern or just an optimistic seller. Browse the knives category, the red skins hub, or compare named Karambit finishes in our Karambit buying guide.
Slaughter, in one sentence
Slaughter is a red marbled knife finish graded by community on how its red lands on the playside — chase a clean Heart or tight Web if you're collecting, buy a tidy scatter at a low float if you just want a sharp red knife. For the rest of the vocabulary, see our CS2 skins glossary and browse all guides.