Case odds tell you how likely each item in a case is. On CSVOLT every case is a table of 10,000,000 tickets, every item owns a range of them, and the size of that range is its drop chance. One opening draws one ticket. That is the whole system. The rest of this guide shows how to read it and what it means for you.
Tickets and percentages
Ten million tickets make the maths easy:
| Tickets an item owns | Drop chance | Roughly 1 in |
|---|---|---|
| 5,000,000 | 50% | 2 |
| 1,000,000 | 10% | 10 |
| 100,000 | 1% | 100 |
| 10,000 | 0.1% | 1,000 |
| 1,000 | 0.01% | 10,000 |
| 100 | 0.001% | 100,000 |
To turn tickets into a percentage, divide by 100,000. On a case page you can click any item to see its value, its ticket range and its odds. The chances of all items in a case add up to exactly 100%.
What one opening does
When you open a case, your provably fair seeds produce one ticket number between 0 and 9,999,999. The item whose range holds that number is yours. The reel animation, the sounds and the Volt Spin come after the result is fixed. They show it, they do not decide it. You can check any opening yourself, see how to verify provably fair results.
What 1 in 1,000 really means
A 0.1% item does not arrive on your 1,000th opening. Every opening is a fresh draw with the same chance, no matter what came before. Here is how likely you are to see a 0.1% item at least once:
| Openings | Chance to hit a 0.1% item at least once |
|---|---|
| 10 | about 1% |
| 100 | about 9.5% |
| 500 | about 39% |
| 1,000 | about 63% |
| 3,000 | about 95% |
So even after 1,000 openings, more than a third of players still have not seen it. There is no "due" item. The ticket draw has no memory.
Why expensive items are rare
A case price and its item chances are set together. If a knife worth thousands of coins sat in a cheap case with a big chance, nobody could offer that case. So the most valuable items get the smallest ranges. In a cheap case a knife might hold a few hundred tickets out of ten million. That is why the picture on a case is the item you will most likely not get.
The practical rule: most results are worth less than the case price. A few are worth more. A very few are worth much more. Plan for the common results and treat the top item as a bonus.
Volatility: how bumpy the ride is
Two cases can cost the same and still feel very different. Volatility describes how spread out the item values are, and CSVOLT shows it as a letter on every case:
- L, Low: values sit close together. Results stay nearer the price more often.
- M, Medium: a balance.
- H, High: many small results with bigger hits now and then.
- I, Insane: most results well below the price, a few huge ones.
Higher volatility does not mean better or worse odds. It means longer stretches of small results between rare large ones. Pick the letter that matches how you like to play.
How in game CS2 cases compare
Cases inside CS2 itself work by rarity tiers rather than by a visible item table, and you need a key to open them. The odds Valve published for its own cases are widely cited: about 79.92% Mil-Spec, 15.98% Restricted, 3.20% Classified, 0.64% Covert and 0.26% for a rare special item such as a knife or gloves. Case sites like CSVOLT build their own cases, so every case has its own table. Always read the table of the case in front of you. More on the tiers in CS2 rarity colors explained.
Volt Spin does not change odds
On CSVOLT the Volt Spin switch moves a case's top items onto a second reel. When the first reel stops on the Volt Spin tile, the bonus reel reveals which top item you got. The ticket was already drawn, so the odds are identical with the switch on or off. See Volt Spin explained.
How to read a case table in one minute
- Scroll to the bottom of the contents: those are the common results.
- Add up the chances of the items worth more than the case price.
- Look at the top item's chance and turn it into "1 in N".
- Check the volatility letter.
- Decide how many openings your budget allows and whether you are fine if none of them hits big.
Frequently asked questions
What are the odds of getting a knife from a CS2 case?
It depends on the case. On CSVOLT each case page shows the exact chance of every item. In Valve's own cases, the published chance for a rare special item is about 0.26%.
Are case odds the same every time I open?
Yes. Every opening is an independent draw with the same chances. Past results do not change the next one.
What does 10,000,000 tickets mean?
It is the size of every case's table. An item with 100,000 tickets has a 1% chance, with 10,000 tickets 0.1%.
Does opening 4 cases at once change the odds?
No. Each case in the opening draws its own ticket with the same chances.
Can I check that the odds were used?
Yes. Every result can be recreated from your seeds and the nonce on the verify page.
18+ only. CSVOLT uses virtual coins and every case is a game of chance. Set limits in responsible gaming.