📌 Key Facts
- The chance of reaching a multiplier x is (1 − house edge) ÷ x. At a 1% edge, 2× hits 49.5% of the time and 10× hits 9.9%.
- Your cash-out target does not change the edge. Low targets win often and pay little, high targets the reverse; both lose the same share on average.
- Crash sites typically run a 1–4% edge, far below the 6.67% of the classic CS2 roulette wheel.
- About 2 rounds in 100 end at 1.00× before any cash-out is possible at a 1% edge, and about 5 in 100 at 4%.
- Martingale at 2× still fails: six misses in a row (about 1.66% per cycle) wipe out a 1,000 coin ladder that started at 10.
- Past crash points do not predict the next one. Predictors and bots are scams.
- Demo coins only. Nothing here can be deposited, won or withdrawn.
How crash works
Every round starts at 1.00× and a multiplier climbs until it crashes at a point that was fixed before the round began. You place a bet, and you win your bet times the multiplier at the moment you cash out, as long as that happens before the crash. Wait too long and the bet is lost. Most players set an auto cash-out so the decision is made at a fixed multiplier instead of on reflex.
The simulator above works the same way. Set a bet and an auto cash-out, press Bet, and either let the auto cash-out take you out or press Cash out yourself. The house edge selector lets you see how the same strategy behaves on a 1% site compared with a 4% site.
The odds of every multiplier
Crash has one of the simplest probability rules in gambling: the chance of a round reaching a multiplier x is (1 − edge) ÷ x. Multiply that by the payout x and you always get 1 − edge, which is why no target changes the house edge.
| Cash-out target | Chance at 1% edge | Chance at 4% edge | Wins per 100 rounds (1%) |
|---|---|---|---|
| 1.10× | 90.0% | 87.3% | about 90 |
| 1.50× | 66.0% | 64.0% | about 66 |
| 2.00× | 49.5% | 48.0% | about 50 |
| 3.00× | 33.0% | 32.0% | about 33 |
| 5.00× | 19.8% | 19.2% | about 20 |
| 10.00× | 9.9% | 9.6% | about 10 |
| 100.00× | 0.99% | 0.96% | about 1 |
Press Simulate 1,000 rounds at my settings to test any row: the result shows how many rounds reached your target against how many were expected, and what happened to the balance. For the strategy side of the game, including why auto cash-out beats reacting by hand, read the CS2 crash strategy guide.
Why the cash-out target does not beat the edge
A 1.5× target wins about two rounds in three at a 1% edge and pays 0.5 of the stake each time; a 10× target wins about one round in ten and pays 9 times the stake. Work either one through and the average return per coin wagered is 0.99 at a 1% edge, or 0.96 at a 4% edge. The target changes how the results feel: low targets produce long runs of small wins broken by a loss, high targets produce long droughts broken by a big hit. It never changes what the game costs.
That is also the honest answer to "what is the best crash strategy". Choose the site with the lowest edge, set a target that matches the swings you are comfortable with, and decide in advance how much you are prepared to lose. Our CS2 crash sites comparison lists the published edge for the sites we tested.
The martingale test at 2×
Doubling after every loss at a 2× cash-out is the most common crash system. Try it above with a 10 coin start.
- With 1,000 coins you can afford six bets in a row: 10, 20, 40, 80, 160 and 320, which adds up to 630. The seventh would be 640 and only 370 is left.
- At a 1% edge a round misses 2× 50.5% of the time. Six misses in a row happen with probability 0.5056, about 1.66%.
- Across 100 cycles the chance of meeting that streak at least once is about 81%. Each successful cycle wins 10 coins, and the one losing streak costs 630.
Staking patterns only reshape the losses. The edge stays exactly where it was.
Crash predictors, bots and "patterns"
After a run of low crashes many players feel a big one is due. It is not: each crash point is computed from its own seed and nonce, so the previous hundred rounds carry no information about the next. The crash point is fixed before the round starts and only the hash of the server seed is shown, so nobody outside the site can know it in advance.
Tools sold as crash predictors, bots or scripts are therefore scams. The usual pattern is a request to log in with Steam, install an extension or paste an API key, which is how accounts and deposits get stolen. More on spotting that: how to spot CS2 gambling scams.
How this simulator calculates the crash point
Every round above is provably fair, so you can practise the check real sites describe before you need it:
- Before the round, the simulator shows the SHA-256 hash of a new random server seed.
- It computes HMAC-SHA256 with the server seed as the key and
clientSeed:nonceas the message, takes the first 13 hex characters (52 bits) and divides them by 252 to get a number r between 0 and 1. - The crash point is
floor((100 − edge%) ÷ (1 − r)) ÷ 100. Anything below 1.00 is an instant crash at 1.00×. - After the round, the server seed is revealed. Hash it, confirm it matches, then paste the seed, client seed, nonce and edge into the verifier to reproduce the crash point.
Real sites publish their own formulas, and they differ in details such as how the edge is applied, so always use the site's own fairness page for real rounds. The general method, and the standards behind it, is in how provably fair works.
I am 18 or older — show where to play CS2 crash for real
These are the top three from our CS2 crash sites comparison, where each is ranked on house edge, payout speed and bonus terms. Claim buttons are affiliate links.
#1 Stake.com
The largest crash player base, so rounds never stall, with a daily race and 200% + 5% rakeback.
Code BINROLL
#2 Rollbit
#3 CSGORoll
The busiest CS2-specific crash room we tested, with free cases and a 5% deposit bonus at 1× wagering.
Code BINROLLAffiliate disclosure: we may earn a commission if you sign up through these links, at no cost to you. Commission is not part of how we rank sites — see our methodology.
Frequently asked questions
What are the odds of reaching 2x in crash?
The chance of a round reaching a multiplier x is (1 minus the house edge) divided by x. At a 1% edge, 2x is reached in 49.5% of rounds, 10x in 9.9% and 100x in 0.99%. At a 4% edge the same targets are reached 48%, 9.6% and 0.96% of the time. The simulator uses exactly this distribution, and the table on this page lists the common targets.
Does a higher auto cash-out change the house edge?
No. Whatever target you pick, the chance of reaching it multiplied by the payout equals 1 minus the house edge. Cashing out at 1.5x wins often and pays little; cashing out at 10x wins rarely and pays a lot; both lose the same share of what you wager on average. The target only changes how uneven the results are.
What is an instant crash?
A round that ends at 1.00x before anyone can cash out. With the formula used here every result below 1.01 is paid as 1.00, so it happens in 1 minus (1 minus the edge) divided by 1.01 of rounds: about 1.98% at a 1% edge and 4.95% at a 4% edge, roughly 2 and 5 rounds in 100. Every bet in those rounds loses.
Does the martingale strategy work on crash?
No. Doubling after every loss at a 2x cash-out wins a small amount most of the time and loses everything occasionally. From 1,000 coins at a 10 coin start you can afford six bets in a row. At a 1% edge each round misses 2x 50.5% of the time, so six misses in a row happen about 1.66% of the time, and across 100 cycles the chance of meeting that streak at least once is about 81%. Each successful cycle wins 10 coins; the streak costs 630.
Can a crash predictor tell me when the round will crash?
No. On a provably fair site the crash point is fixed by a secret server seed before the round starts, and only its SHA-256 hash is shown. Predicting it would mean reversing SHA-256. Previous crash points have no influence on the next one. Tools sold as crash predictors, bots or scripts are scams, commonly built to steal Steam accounts, API keys or deposits.
How is the crash point calculated in this simulator?
HMAC-SHA256 is computed with the server seed as the key and clientSeed:nonce as the message. The first 13 hex characters (52 bits) are divided by 2 to the power of 52 to give a number r between 0 and 1. The crash point is floor((100 minus the edge in percent) divided by (1 minus r)) divided by 100, and any result below 1.00 counts as an instant crash at 1.00x. Real sites publish their own formulas, which can differ.
Can I win real money in the simulator?
No. The simulator uses demo coins with no value and there is nothing to deposit, win or withdraw. It exists to show how crash behaves over many rounds before anyone risks real money.
Where can I play CS2 crash for real?
Our comparison of CS2 crash sites ranks the platforms we tested on house edge, payout speed and bonus terms. Real-money crash is 18+ only and legal status depends on where you live. Code BINROLL applies on the crash sites we list except Gamdom, which uses BINBONUS.