Crash games have a house edge between 1% and 4% depending on the platform. This means for every $100 wagered over many rounds, you can expect to receive between $96 and $99 back on average. The crash point each round is determined by a random number generator — it follows a mathematical probability distribution where lower crash points are significantly more common than higher ones. No strategy can overcome the house edge, but understanding the maths helps you make informed decisions about how you play.
What is a crash game?
A crash game is a multiplier-based casino game. A number (the multiplier) starts at 1.00x and rises continuously. At a random point, the game "crashes" and the multiplier stops. Your goal is to cash out before the crash. If you cash out in time, your bet is multiplied by the number shown when you pressed the button. If you don't, you lose your bet.
The format was created specifically for cryptocurrency gambling and has become one of the most popular game types across crypto casinos. Every major platform — Roobet, Stake, BC.Game, Gamdom, Duelbits — offers a crash game.
How crash point probability works
The crash point follows a specific mathematical distribution. It is not uniform — low crash points are far more common than high ones. This is how the casino maintains its edge.
Here is the approximate probability of the multiplier reaching specific values:
| Multiplier | Probability of reaching it | Meaning | |-----------|---------------------------|---------| | 1.00x (instant crash) | ~1–4% per round | You lose immediately with no chance to cash out | | 1.50x | ~64% | The multiplier reaches 1.5x about 2 out of 3 rounds | | 2.00x | ~48% | Roughly a coin flip — reaches 2x about half the time | | 3.00x | ~32% | About 1 in 3 rounds | | 5.00x | ~19% | About 1 in 5 rounds | | 10.00x | ~9.6% | About 1 in 10 rounds | | 20.00x | ~4.8% | About 1 in 20 rounds | | 50.00x | ~1.9% | About 1 in 50 rounds | | 100.00x | ~0.96% | About 1 in 100 rounds | | 1,000.00x | ~0.096% | About 1 in 1,000 rounds |
The formula follows roughly an inverse relationship: the probability of reaching multiplier M is approximately 1/M (adjusted for the house edge). This means 2x is about half as likely as 1x, 10x is about one-tenth, and so on.
Calculate your crash game odds
Use the calculator below to see your exact win probability, expected profit, and how much the house edge costs you at any target multiplier. Compare platforms side by side.
House edge explained
The house edge is built into the crash point algorithm. It works through the instant crash mechanism — a small percentage of rounds crash at exactly 1.00x, meaning everyone loses regardless of strategy.
If the instant crash probability is 3.5% (as on Roobet), then the house edge is 3.5%. This means:
- For every $100 wagered across many rounds, the expected return is $96.50
- The RTP (Return to Player) is 96.5%
- This applies regardless of your cashout strategy
The house edge varies by platform:
| Platform | Crash RTP | House Edge | Instant crash rate | |----------|----------|------------|-------------------| | Roobet Crash | 96.5% | 3.5% | ~3.5% | | Stake Crash | 96.0% | 4.0% | ~4.0% | | BC.Game Crash | 99.0% | 1.0% | ~1.0% | | Gamdom Crash | 95.0% | 5.0% | ~5.0% | | Aviator (Spribe) | 97.0% | 3.0% | ~3.0% |
Aviator by Spribe deserves special mention — it is the most popular crash game globally with 97% RTP and a unique dual-bet system allowing two simultaneous wagers per round. Unlike platform-exclusive crash games, Aviator is available on 3,000+ casinos including Roobet, Stake, BC.Game, and 1Win. For the complete Aviator breakdown including probability tables, dual-bet strategies, and our dedicated tracking tools at AviatorRTP.com and Aviator Sniper, see our full Aviator Game Guide.
BC.Game offers the lowest house edge at 1%, meaning it returns $99 for every $100 wagered on average. However, BC.Game has a lower maximum bet ($100 vs Roobet's $20,000), which limits high-stakes play.
Expected value: why no strategy beats the house
Expected value (EV) is the average outcome of a bet over many repetitions. In crash games, the EV is negative for the player — always.
Example with a 2.00x auto-cashout on Roobet (3.5% house edge):
- You win when the multiplier reaches 2.00x: probability ~48%
- You profit $10 per win (on a $10 bet)
- You lose when it crashes before 2.00x: probability ~52%
- You lose $10 per loss
Expected result per bet: (0.48 × $10) - (0.52 × $10) = $4.80 - $5.20 = -$0.40
That -$0.40 per $10 bet is the 4% house edge in action (slightly higher than 3.5% because the 2x threshold interacts with the crash distribution).
The critical insight: Changing your cashout target does not change the expected value. Whether you cash out at 1.10x, 2.00x, or 100.00x, the maths converge to the same house edge over many rounds. Low cashouts give frequent small wins with occasional losses. High cashouts give frequent losses with occasional large wins. The long-run outcome is mathematically identical.
Common crash game myths
"The game is due for a high multiplier"
Each round is independent. If the last 10 rounds all crashed below 2x, the probability of the next round reaching 10x is exactly the same as it always is (~9.6% on a 3.5% house edge game). There is no "due" in a random system. This is known as the gambler's fallacy.
"I can profit with the Martingale strategy"
The Martingale strategy (doubling your bet after each loss) does not change the house edge. It changes the distribution of outcomes — you win frequently but occasionally suffer catastrophic losses when a long losing streak exhausts your bankroll or hits the maximum bet limit. The expected value remains negative.
"Crash predictors can forecast the next crash point"
No software can predict crash outcomes on a legitimate platform. Provably fair crash games use cryptographic randomness that cannot be predicted without knowing the server seed in advance — which is impossible by design. Any tool claiming to predict crash results is a scam.
"Lower cashout targets are safer"
Lower targets win more frequently, which feels safer. But the losses when they occur are proportionally larger relative to the wins. A 1.10x target wins about 87% of the time — but each win only profits $1 per $10 bet, while each loss costs $10. Over many rounds, the result converges to the same house edge as any other target.
How provably fair protects you
On platforms with provably fair crash games (Roobet, Stake, BC.Game), the crash point for each round is determined before anyone places a bet. The system works through cryptographic hashing:
- The server generates a seed that determines the crash point
- A hash (fingerprint) of this seed is published before the round
- After the round, the actual seed is revealed
- You can verify the hash matches, proving the result was predetermined
This means the casino cannot see your bets and then manipulate the crash point. The outcome is locked before the round begins. Provably fair does not eliminate the house edge — it ensures the house edge is the only advantage the casino has, and nothing more.
For a detailed explanation, see our How Provably Fair Works guide.
Choosing the right crash platform
If crash is your primary game, the house edge difference between platforms matters significantly over time.
If you play 1,000 rounds at $10 per bet ($10,000 total wagered):
| Platform | House edge | Expected loss | |----------|-----------|---------------| | BC.Game (1%) | $100 | | | Aviator/Spribe (3%) | $300 | | | Roobet (3.5%) | $350 | | | Stake (4%) | $400 | | | Gamdom (5%) | $500 | |
Over $10,000 in wagers, the difference between BC.Game and Gamdom is $400 — a meaningful amount. For frequent crash players, choosing the lowest house edge platform is the single most impactful decision you can make.
However, house edge is not the only factor. Maximum bet limits, payout caps, withdrawal speed, and the overall platform experience all matter. Our Roobet Crash Strategy guide covers platform-specific tactics in detail.
Bankroll management fundamentals
Understanding the maths leads to one conclusion: bankroll management is the only aspect of crash gambling you can genuinely control.
Set a session budget. Decide before you start how much you can afford to lose. When it is gone, stop.
Calculate your rounds. Divide your budget by your bet size to know how many rounds you can sustain. A $100 budget at $2 per bet gives you 50 rounds — enough to experience the game properly.
Use auto-cashout. Removing the manual decision eliminates emotional exits. Set a target multiplier and let the system execute consistently.
Accept the house edge. Crash is entertainment with a cost — the house edge. If you play 1,000 rounds at $5 on Roobet, expect to lose approximately $175. If that amount is acceptable entertainment spend, proceed. If not, adjust your bet size or session length.
Play Crash on Roobet →Frequently asked questions
What is the house edge on crash games?
The house edge on crash games ranges from 1% to 5% depending on the platform. BC.Game has the lowest at 1%, Roobet is 3.5%, Stake is 4%, and Gamdom is approximately 5%. The house edge is built into the crash point algorithm through the probability of instant crashes at 1.00x.
What is the RTP of crash gambling?
RTP (Return to Player) is 100% minus the house edge. On Roobet Crash, the RTP is 96.5%, meaning for every $100 wagered over many rounds, the expected return is $96.50. On BC.Game Crash, the RTP is 99%.
Can you make money playing crash?
In the short term, yes — variance means you can have winning sessions. In the long term, the house edge ensures negative expected value for the player. Crash gambling should be treated as entertainment with an expected cost, not as an income source.
Is the Martingale strategy profitable in crash?
No. The Martingale strategy does not change the house edge or expected value. It increases the frequency of small wins while creating the possibility of catastrophic losses during extended losing streaks. The mathematical expectation remains negative regardless of bet sizing strategy.
How do I know if a crash game is fair?
Play on platforms that offer provably fair verification — Roobet, Stake, and BC.Game all provide this. Provably fair means you can mathematically verify that each round's outcome was determined before bets were placed. Avoid any crash game that does not offer verifiable fairness.
What is the best cashout multiplier for crash?
There is no optimal cashout multiplier because all targets produce the same expected value (negative, equal to the house edge) over many rounds. Low targets (1.10x–1.50x) win frequently with small profits. High targets (5x–100x) win rarely with large profits. Choose based on your volatility preference and session length goals, not on a belief that one target is mathematically superior.
