CS2 Case Simulator

Why use a CS2 case simulator?

A real CS2 case costs the case price plus a $2.49 key, and most openings give back a skin worth far less. A simulator gives you the same experience without the bill. You see every reel spin, every drop and its value, and you learn how rare a knife really is, all with play money.

People use it for different reasons:

• To see what a case actually drops before buying one for real.
• To chase a knife or gloves without spending anything.
• To test the odds: open a hundred cases in a minute and compare the results with the published chances.
• For fun, the same way people watch case opening streams.

How CS2 cases work

Cases arrived in August 2013 with the Arms Deal update, and every weapon case since has used the same system. A case holds a set of weapon skins in four rarities, plus a pool of rare special items, which are knives, gloves or both depending on the case. When you open one, the game first picks a rarity and then a random item of that rarity.

In 2017 Valve published the odds for every case. They are the same for all weapon cases:

• Mil-Spec (blue): 79.92%
• Restricted (purple): 15.98%
• Classified (pink): 3.2%
• Covert (red): 0.64%
• Knife or gloves (gold): 0.26%

That works out to one knife or pair of gloves in about every 385 cases on average. Every opening is independent, so you could get one first try or go a thousand cases without one. Our simulator uses exactly these numbers.

Float, wear and StatTrak

Two skins with the same name can be worth very different amounts. That’s because every drop also gets a float, a number between 0 and 1 that decides how worn it looks:

Wear	Float range
Factory New	0.00 – 0.07
Minimal Wear	0.07 – 0.15
Field-Tested	0.15 – 0.38
Well-Worn	0.38 – 0.45
Battle-Scarred	0.45 – 1.00

Each skin has its own float range, so some can never be Factory New and others never Battle-Scarred. Field-Tested is the most common result, and Factory New the rarest for most skins. The simulator rolls the float the same way and prices each drop at its own wear.

StatTrak™ versions count your kills with the weapon and drop in 10% of openings from a weapon case. Knives can be StatTrak™ too; gloves never are. StatTrak™ skins usually sell for more than the normal version.

Cases, souvenir packages and capsules

The simulator covers more than weapon cases:

• Weapon cases need a key and use Valve’s published odds.
• Souvenir packages drop during Majors. Their skins come with stickers from the match, and they open without a key.
• Sticker capsules hold community, team and tournament stickers.
• Autograph capsules hold signed player stickers from the Majors.

Valve hasn’t published odds for packages and capsules. For those the simulator uses the widely used estimate that each rarity is about five times rarer than the one below, and every page says so.

Is opening CS2 cases worth it?

On average, no. For most cases, the items you get are worth less than the case and key together. Every case page on this site shows the cost to open, the average value of a drop at today’s market prices, and the average return as a percentage, so you can compare cases side by side. The “Best value right now” list above shows the cases with the highest return today. Even those usually return less than they cost, because most of the average comes from rare drops you probably won’t hit.

That’s the honest maths of case opening, and it’s why a free simulator is a good place to get the thrill without the loss.

Simulator vs case opening sites

Case opening sites sell their own cases with their own odds, usually much cheaper than official cases and often with a provably fair check. They’re real gambling with real money, and they’re not affiliated with Valve. If you want to compare them, our case opening site rankings score each one on trust, odds, bonuses and withdrawals. If you just want to open cases for fun, stay here: nothing in the simulator costs money, and nothing in it can be withdrawn.

Tips for using the simulator

• Switch on fast open to see results quickly, or use “Open 10” to open a batch at once.
• Turn off “Pay to open” if you just want to spin without tracking a balance.
• Check your inventory to see your best drops and your total profit or loss over time. It’s saved in your browser.
• Compare a few cases with the average return figure before you ever buy one for real.