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- A knife or glove ("rare special item") drops from roughly 0.26% of standard cases, about 1 in 385.
- StatTrak is a separate 10% roll, so StatTrak knives are around 1 in 3,850.
- Rarity in odds is not the same as rarity in value: many knives are cheaper than some Covert rifles.
- Expected value of case opening is below the cost of the key and case.
"What is the rarest thing I can pull?" is the most asked question in case opening. The answer has two layers: what the drop tables say, and what the market actually pays. We separate both here. For the wider maths see our case opening odds guide, and for browsing see CS2 cases.
The standard odds ladder
Standard Valve cases use a fixed rarity ladder. The figures below are the commonly cited rates; always check the case page in-game for exact details.
| Tier | Colour | Approx. chance | Roughly 1 in |
|---|---|---|---|
| Mil-spec | Blue | 79.92% | 1.25 |
| Restricted | Purple | 15.98% | 6 |
| Classified | Pink | 3.20% | 31 |
| Covert | Red | 0.64% | 156 |
| Rare special (knife/glove) | Gold | 0.26% | 385 |
Notice the structure: each step up is about five times rarer than the last. That is why a 100-case session often produces no red at all.
Layer one: StatTrak
Separately from rarity, each eligible item rolls a 10% chance of being StatTrak. Multiply the two and a StatTrak knife is roughly 0.026%, about 1 in 3,850 cases. Sticker-free, StatTrak knives usually carry a premium on the market, though how much depends on the model and finish.
Layer two: wear (float)
After rarity, the item gets a float value that sets its wear. Factory New skins make up a modest share of drops, and the best floats within a tier are rarer still. Our float and wear guide and low float skins explained go deeper, and you can check yours with the float calculator.
Rare in odds versus rare in value
Here is the twist: a gold drop is not automatically valuable. Approximate ranges, which move daily:
| Item type | Typical price range (approx.) | Notes |
|---|---|---|
| Budget knife, Battle-Scarred, plain finish | CA$100 to CA$250 | Often the "floor" for a gold |
| Popular knife, Field-Tested, Fade or Doppler | CA$400 to CA$1,500+ | Phase and fade % matter |
| Gloves, Field-Tested | CA$300 to CA$3,000+ | Wide range by finish |
| Top-tier knife, Factory New, special finish | CA$2,000 to CA$10,000+ | Where the big jackpots live |
Many pulls land at the bottom of this table. A case that produces a plain Battle-Scarred knife is "rare" but may be worth little more than the cost of several keys.
The genuinely rare stuff
Discontinued and out-of-pool items
Some skins can no longer be pulled from any active case, so supply is fixed and shrinking as items are traded away or destroyed in trade-ups. Older collection items and certain discontinued case knives fall into this bucket. Their rarity comes from supply rather than odds.
Top finishes and phases
Within knives, special patterns are far rarer than the base item. Our guides to Doppler phases, fade percentage and pattern index and blue gems explain why a one-in-hundreds pattern can be worth many times a normal copy.
Stickered and Souvenir items
Certain tournament stickers and Souvenir packages from historic events are scarce because they came from limited windows. See Souvenir packages explained and stickers.
What this means for case opening on gambling sites
Gambling sites build custom cases with their own item pools and prices. The advertised odds should be published and are usually priced so the average return is below 100% of the case cost. Use the case opening simulator to see how rarely top items appear in a realistic session.
Want a taste without depositing? CSGOEmpire's code case2go offers a Free Case worth up to 2,050 coins.
Reality check: if a case costs CA$5 and you open 385, you have spent roughly CA$1,925 to reach the average gold. The pull may be worth less than that. Expect to lose money over time.
Case opening myths we keep hearing
Because drops feel mysterious, folklore spreads quickly. Here are the myths we see most, and what the maths says.
| Myth | Reality |
|---|---|
| "Cases get hot after a dry run" | Each opening is independent; past results do not change the next one. |
| "Opening at a certain time gives better odds" | No evidence supports time-of-day effects on standard odds. |
| "Buying more keys guarantees a gold" | At 1 in 385, you can open 385 cases and still see none. The chance of no gold in 385 openings is about 37%. |
| "Rare means expensive" | Value depends on model, finish, wear and demand, not only the drop rate. |
How many cases does it take?
With a 0.26% chance per case, the probability of at least one gold in N openings is 1 - (0.9974)^N. After 100 cases the chance is roughly 23%; after 385 it is about 63%; after 1,000 it is about 93%. Many people assume 385 cases guarantee a gold, but the average and the guarantee are different things. Use the case opening simulator to see how streaky this feels.
A quick expected-value reality check
Imagine a case plus key costing about CA$5. A gold item arrives about once per 385 openings, a Covert once per 156, and the rest are low-value skins. The cost to see one gold on average is around CA$1,925. If the average gold is worth CA$400 to CA$600, you can see how the weight of cheap openings must be offset by their tiny resale values, and why the average return sits well below 100%. This is not unique to Valve cases; it is the structure of every loot-box system.
Smarter ways to chase a specific item
If you want one particular knife or glove, buying it directly is almost always cheaper than hoping for a drop. If you want the experience of opening, set a hard budget, and consider doing it with a free case rather than paying. Collecting is a perfectly good hobby, but it is a different thing from an investment strategy.
Takeaways
- Odds tell you how often something drops; the market decides what it is worth.
- Float, pattern, StatTrak and stickers can all multiply value beyond the base item.
- Prices above are approximate and change daily, so check live listings before buying or selling.
Frequently asked questions
What are the odds of a knife from a CS2 case?
The standard rare special item rate is about 0.26%, roughly 1 in 385 cases. Which knife or glove you get is then random within the case pool.
What is the most common drop?
Mil-spec (blue) skins make up roughly 80% of drops in a standard case.
Are StatTrak drops rarer?
Yes. Each skin has about a 10% chance of being StatTrak, so a StatTrak knife is roughly a 1-in-3,850 event.
Do case odds change on gambling sites?
Site cases are custom, so odds and prices differ from official Valve cases. Check each site's published odds.
Is opening cases a good investment?
Generally no. Keys and cases cost more than the average value of what you receive, so treat it as entertainment.
Play responsibly: CS2 gambling is for adults 19+ (18+ in AB, MB, QC). Set limits, never chase losses, and use self-exclusion if it stops being fun. Free, confidential help: ConnexOntario 1-866-531-2600 or your provincial helpline — see our responsible gambling page.
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