CS2 case opening gives you one random item from a fixed pool, and the tier odds are the same for every standard weapon case: 0.26% for a knife or gloves and 0.64% for a Covert. On Steam you also need a $2.49 key, and on average the items you receive are worth less than what you paid. This guide covers the odds, wear and StatTrak, the cost maths, Valve's 2025 changes and how opening works on CSDROP, with figures as of October 2026.
How does CS2 case opening work?
You open a case with its key, and the game gives you one skin, knife or pair of gloves from that case's collection. Cases come from the weekly drop or the Steam Community Market, and the key is usually the bigger cost. For a deeper walkthrough, see the CSDROP wiki guide on how CS2 cases work: keys, drops and official odds.
After matches on Valve's official servers you accrue XP toward a rank-up drop, which can be a case, a graffiti or a weapon skin. You can also buy cases from other players. A current-rotation case often costs just cents, while older discontinued cases can cost several dollars. A key costs $2.49 from the in-game store.
Keys bought since October 2019 are untradeable and unmarketable, so they can only open a case. The reel animation is only a show. The result is decided by the odds below, there is no pity timer, and every opening is independent.
What are the real odds in a CS2 case?
Each tier has a fixed chance per opening, and a knife or gloves is roughly a 1-in-385 event. These rates became public in 2017 under China's loot box disclosure rules, were published through Valve's partner Perfect World, and carried over unchanged into CS2. The wiki has a full breakdown of CS2 case drop rates by rarity.
| Tier | Colour | Chance per opening | About 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 or gloves) | Gold | 0.26% | 385 |
Two details trip people up:
- Tiers share their rate. The Fever Case has 7 Mil-Spec, 5 Restricted, 3 Classified and 2 Covert skins, so the AWP | Printstream drops at 0.64% divided by 2. That is 0.32% per opening, about 1 in 313.
- Knives and gloves share the 0.26%. A case's gold slot holds a knife pool or a glove pool, and each item in that pool gets an equal slice. A specific knife finish is therefore much rarer than 0.26%.
Each opening is independent. Over 385 openings the chance of at least one gold item is about 63% (1 − 0.9974^385), which means roughly a 37% chance of none at all. At $2.49 per key, those 385 openings cost roughly $959 in keys alone, and even a gold drop does not guarantee you get back what you spent.
Do Souvenir Packages and Sticker Capsules use the same odds?
No. They are separate products with their own odds tables, and neither drops knives.
| Container | Key needed? | Top tier | Notes |
|---|---|---|---|
| Weapon case | Yes, $2.49 | Gold 0.26% | Knife or gloves in the gold slot |
| Souvenir Package | No | Covert 0.0256% (about 1 in 3,906) | Six tiers; tied to Major tournaments |
| Sticker Capsule | No | Varies by capsule | Own rarity ladder; check the capsule |
Souvenir items cannot be StatTrak. Souvenir and capsule rates are community-derived figures, so treat them as close estimates rather than Valve-published guarantees.
How do StatTrak and wear change what you get?
After the item is chosen, the game rolls StatTrak and wear separately, which makes specific versions far rarer than the tier odds suggest. An eligible drop has a 10% chance of being StatTrak, and it receives a float between 0.00 and 1.00 that sets its wear grade. Gloves never come in StatTrak. The wiki's guide to CS2 float values explains exteriors, caps and wear in more detail.
| Wear | Float range | Approx. share of drops |
|---|---|---|
| Factory New | 0.00–0.07 | 3% |
| Minimal Wear | 0.07–0.15 | 24% |
| Field-Tested | 0.15–0.38 | 33% |
| Well-Worn | 0.38–0.45 | 24% |
| Battle-Scarred | 0.45–1.00 | 16% |
Many skins have narrower float ranges, so not every skin can drop in Factory New. The layers multiply:
- A StatTrak Covert is 0.64% × 10% = 0.064%, about 1 in 1,560.
- A Factory New StatTrak Covert is 0.64% × 10% × 3% ≈ 0.0019%, about 1 in 52,000.
Is opening CS2 cases worth it?
On average, no. Expected value (EV) is each item's value multiplied by its chance, summed, and compared with what you paid, and most openings return less than they cost. The prices below are made-up round numbers, chosen to show how the maths behaves rather than to describe a real case.
| Tier | Chance | Assumed avg. value | Contribution to EV |
|---|---|---|---|
| Mil-Spec | 79.92% | $0.10 | $0.080 |
| Restricted | 15.98% | $0.60 | $0.096 |
| Classified | 3.20% | $3.00 | $0.096 |
| Covert | 0.64% | $20.00 | $0.128 |
| Gold | 0.26% | $300.00 | $0.780 |
| Total EV | $1.180 |
With a $0.50 case plus the $2.49 key, you pay $2.99 for $1.18 of expected value, about 60% below cost. That gap is the house edge in practice: the price of an opening is set above the average value of what comes out. Gold supplies $0.78 of that $1.18, yet it lands about once in 385 openings, so a typical opening ends far below the average. SteamDB's July 2026 model of the Fever Case shows the same pattern: the knife tier carries $0.59 of a $1.41 expected value.
Real cases tell the same story, but trackers disagree on the exact figure because they use different price sources. As of October 2026, one SteamAnalyst listing showed the Gamma 2 Case at −50.0% expected return, while its case page showed −25.1%. Both are below zero, and other trackers also put popular cases well under 100% of cost. See the Gamma 2 Case page on SteamAnalyst for live numbers.
Selling on the Steam Community Market costs more. The 5% Steam fee plus the 10% game fee takes about 13.04% of the buyer's price, leaving the seller 86.96%. The proceeds are Steam Wallet credit, not withdrawable cash.
Key takeaway: The negative EV comes from price versus odds, and no opening strategy, streak or timing changes it. Run the sum with current item prices before you spend, and expect to receive less than you pay on average. You can lose your whole budget.
How did Valve's 2025 updates change cases and trading?
Two updates changed how items move and how knives can be obtained.
Trade Protection (July 2025). Since July 2025, every CS2 item you receive in a trade is Trade Protected for 7 days. You can equip it, but you can't trade it on or sell it on the Market until protection lifts. A protected case won't open, and a protected item can't go into a trade-up contract. Reversing a trade is all-or-nothing and puts a 30-day trade and Market cooldown on the account that reverses it. If you trade skins, plan around the lock. Read SteamAnalyst's guide to trade holds and Trade Protection for the details.
Knife trade-ups (October 2025). Players can hand over five Covert items in exchange for a knife or gloves. All five must be the same type, either all normal or all StatTrak, and the result comes from the knife and glove pools of the cases your skins belong to. Cases are no longer the only route to a gold item. Covert prices jumped sharply after the update. The HLTV report on the update covers the patch, and the wiki explains the trade-up contract rules, odds and float formula.
How does case opening work on CSDROP?
On CSDROP you open cases from your balance with no key, and each case page shows its item pool and drop rates before you open. There are 300+ cases, including knife, glove and cheap categories. Don't assume the odds match Valve's table above: read each case page. As with any case-opening site, there is a built-in house edge, so on average you should expect to receive less than you spend. It varies by case and changes over time, so this guide doesn't quote a figure. CSDROP is for adults only (18+, or the age of majority where you live if higher) and is not affiliated with Valve or Steam.
| Steam | CSDROP | |
|---|---|---|
| Key | $2.49 per opening | None; opens from balance |
| Odds shown | Valve's tier rates | Each case page lists pool and drop rates |
| What you receive | Item in your Steam inventory | Item credited to balance at market value |
| Cashing out | Market sale for Steam Wallet credit, about 15% in fees | Buy skins on the marketplace and send to Steam via SkinsBack, or withdraw crypto |
The steps:
- Pick a case and read its item pool and drop rates. Run the EV method above with current prices.
- Fund your balance. Options include cards, Apple Pay, Google Pay, crypto and skins.
- Open the case from your balance. The item you receive is credited at market value, which may be less than what you paid.
- To get a skin, buy it on the marketplace and send it to Steam. Or withdraw the balance as crypto to an external wallet.
CSDROP charges no fee on standard deposits and withdrawals, but payment providers and blockchain networks may charge their own. KYC may be requested before some withdrawals, and Steam trade holds can delay skins arriving in your inventory. Check the terms for timelines before you rely on them.
On fairness, case openings use provably fair HMAC-SHA256 from a server seed (shown hashed before play), your client seed and a nonce. You can verify results from the game history. Provably fair proves a result wasn't altered; it does not change the odds or remove the house edge. Case battles take their client seed from a future EOS blockchain block ID. For a neutral look at how to check a site, read are CS2 case opening sites legit, and how to verify a roll.
New accounts get free cases with no deposit needed, though you may first have to verify your email or link Discord or Steam. Each free case is still a random opening, so treat it as a way to try the site, not a way to make money. Details are on the free case page.
How do you keep case opening under control?
Set a budget before you start and stop when it is gone, because every opening has negative expected value. Case opening is entertainment, not a way to make money. Use only money you can afford to lose, and don't chase losses: past results never raise your next chance. Compare what you spent with what you received every so often.
Rules differ by country. If your local law treats paid random rewards as gambling, don't open cases. CSDROP lists restricted territories in its Terms, and using a VPN or proxy to get around them is not allowed. If it stops being fun, take a break and contact support through live chat.
Note: CSDROP is for players 18+, or the age of majority in your country if higher. Play with money you can afford to lose.
FAQ
What are the odds of getting a knife from a CS2 case?
A knife or pair of gloves drops about 0.26% of the time, roughly 1 in 385 openings, in every standard weapon case. The odds for one specific knife finish are lower, because the 0.26% is split across the case's whole gold pool.
How much does it cost to open a CS2 case?
On Steam you pay the case price plus a $2.49 key. Current-rotation cases often cost cents, so one opening can cost barely more than the key. Older discontinued cases can cost several dollars on their own, and local-currency prices follow Steam's regional pricing.
Do CS2 case odds improve after a losing streak?
No. There is no pity timer and every opening is independent. A player on opening 101 has the same chance as on opening one.
Can you get a knife without opening cases?
Yes. Since October 2025 you can use a Trade Up Contract to exchange five Covert skins of the same type for a knife or gloves. The result depends on which cases your skins come from, so check the pools before you commit. You can also buy a knife directly from other players.
Do I need a key to open cases on CSDROP?
No. Cases open from your balance. Each case page shows its item pool and drop rates before you open, and items you receive are credited to your balance at market value, which on average is below what an opening costs.