Crash game glossary: the words used on game screens and in terms
Forty terms you meet on a crash game screen, on a studio's fairness page and in a casino's terms, each explained in a few plain sentences, with a pointer to the page that goes deeper.
This crash game glossary collects the words that turn up in three places: on the game screen, on a studio's fairness page and in a casino's terms. Each entry is short and plain, and where a topic has a page of its own, the entry points there.
The terms are grouped by where you meet them: the round itself, the numbers behind it, the kinds of game, the seed check, the account, and a few habits of thought that cost players money.
The three inputs behind a provably fair crash round. Before play starts, only the hash of the server seed is public. Spribe's fairness page, opened on 15 September 2026, describes its own variant: the operator's server seed is combined with seeds from the players in the round and hashed with SHA512. A published hash shows the seed was not swapped afterwards; it says nothing about the house edge.The fourteen sections
The short stretch before a round when stakes are accepted. Nothing moves on the screen yet, and under a seeded scheme the result is already fixed by then. Stake size and preset can only be changed here, before the climb begins.
Multiplier
The number that climbs from 1.00x during a round. Your payout at any moment is your stake times the multiplier shown when you leave. It only ever moves upwards until the stop.
Cash-out
Leaving the round before it stops, which locks in the stake times the current multiplier. A cash-out decides what you collect, never where the round ends.
Auto cash-out
A multiplier you set in advance, at which your stake closes by itself. JetX's page offers it at a preset multiplier, while Turbo Games' Aero runs auto-play without forcing one. The guide to presets covers the details.
Crash point
The multiplier a round stops on. Anyone still in at that moment loses the stake, and past crash points carry no information about the next one. How it is derived from a hash is explained on the page about the stopping multiplier.
Early stop
A round that ends at 1.00x or very close to it, before anyone can react. JetX's page states that the jet can explode as early as 1.00x.
Two stakes
Two independent bets in the same round, each with its own exit. JetX's page describes this; the two bets are separate wagers and each carries the house edge. Splitting a stake changes the pattern of results, not the long-run cost.
Demo
Free play with no money at stake. Aviator's game page on spribe.co carries a “Play Demo” button, and Turbo Games states that its Crash X demo uses the game's real 96% return.
Numbers behind the round
Return to player
The share of all stakes a game is designed to pay back across a very large number of rounds. Aviator's page prints 97%, JetX's page a range of 96.2%–98.9%, and Crash X and Aero 96%.
House edge
The part of every stake the design keeps over the long run: 100% minus the return. A 97% return means a 3% edge. The arithmetic is worked through on the return and house edge page.
Return range
A span of returns printed for one title, such as JetX's 96.2%–98.9%. The casino's configuration decides which value a lobby runs.
Top multiplier
The highest number a round can reach by design. Turbo Games prints ×999,999 for Crash X and Aero; that is a ceiling, not a statement about how often a round gets near it.
Turnover
The total of all stakes placed, counting the same coins again each time they are re-staked. Expected cost scales with turnover, not with the size of the deposit. Re-staking a US$100 deposit until US$1,000 has been wagered means US$1,000 of turnover.
Martingale
A betting system that doubles the stake after each loss. After five losses the sixth stake is 32 units for a one-unit gain, and every unit staked carries the house edge.
Crash and Limbo take the same decision at different moments. In crash you pick your exit while the number rises; in Limbo you name the target first and the round resolves in a single step. Metaspins' terms (clause 14.13.1, opened 2 September 2026) put the two in one group for bonus wagering.
Kinds of crash game
Multiplayer crash
The plain format: one rising number, every player's stake riding on it, and one stop that nobody chooses. The page on the original format traces it.
Mini game
The category Spribe uses for Aviator on its own page: a short, fast title outside the slot and table families.
Originals
A casino's own in-house games, as opposed to titles bought from studios. Rainbet describes its own Originals as built on provably fair logic.
In-house crash
A crash game a casino builds for itself. Bitsler's own games list includes one called Crash Pro.
Limbo
A relative of crash where the target multiplier is chosen before anything happens and the outcome lands in one step, with no climb. Each casino builds its own, and the page on how a Limbo round is settled explains the differences.
Seeds and fairness
Server seed
A secret value the operator generates before a round. Spribe's page says it consists of 16 random symbols. Only its hash is public beforehand; the seed itself is revealed later.
Client seed
A value that comes from the player's side and is mixed into the result. In Spribe's settings window you can change it, which starts a new chain of results.
Nonce
A counter that moves up by one with every round played under the same seeds, so each round gets a fresh input without new seeds.
Hash
A fixed-length fingerprint of some data. Publishing the hash of a seed commits the operator to that seed without revealing it. Even a tiny change in the input produces a completely different hash, which is why a revealed seed can be matched against the one committed earlier.
Commit and reveal
The two halves of a seed scheme: the operator commits by publishing a hash before the bets, then reveals the seed afterwards so anyone can compare the two. Aero's page describes exactly this order.
SHA256 and SHA512
Two standard hash functions. Spribe shows the SHA256 hash of the next server seed before the round and combines the seeds into a SHA512 hash from which the result is derived.
Provably fair
A scheme in which the result is fixed by committed seeds and can be recomputed after the round. It shows that nothing was swapped after the bets; it does not show the house edge. More on the meaning of a published hash.
Seed rotation
Retiring the current server seed, which reveals it, and committing a new one. Wolfbet's FAQ lets you change the server seed per session or per bet ID. The rotation page shows what to save first.
RNG
A random number generator. JetX's studio page says the multiplier's height comes from one; that page describes no seed check.
Verification
Recomputing a finished round from its revealed seeds and nonce and comparing the result. In Spribe's titles the route starts in the round history, through the “provably fair” icon. The steps are listed on the page about checking one round yourself.
Account and casino terms
Provider list
The list of game studios a casino publishes. A crash studio on it shows a supplier, not that one title is in the lobby. Five of the twelve ranked casinos name at least one crash studio on theirs.
Wagering
The amount you must stake before bonus money can leave the account, given as a multiple. At 30 times, a US$50 bonus means US$1,500 of stakes.
Deposit wagering
A rule that the deposit itself must be staked before it can be sent out, even without a bonus. Vave's cl. 8.11 asks for three times in the casino or once on sports.
Withdrawal cap
A ceiling on how much can leave per day, week or month. Wolfbet's cl. 15 ¶5 sets US$8,000 a week and US$30,000 a calendar month.
Instalments
Payment of a large balance in parts. Rocketpot pays wins from US$5,000 in monthly parts of up to US$5,000 (cl. 11.5).
KYC
Short for know your customer: the identity check a casino runs, usually a photo ID and proof of address. The threshold, if any, is in the terms.
Document deadline
The time the terms give you to send requested papers, such as 72 hours at Rainbet (cl. 20.1) or 30 days at Metaspins (cl. 9.10).
Licence register
The public list an authority keeps of the licences it issued, with holder, number, domains and status. For Curaçao it is the portal at cert.cga.cw; Anjouan keeps a public register of its own.
Restricted list
An operator's own list of places whose residents it will not serve, printed in its terms; which ranked operators name the United States is shown on the account rules page.
Habits of thought
Hot and cold streaks
The belief that a run of high or low stops says something about the next round. Each round starts from new inputs, so a streak describes the past only. The same goes for feeling “due” a high multiplier after a string of early stops: rounds are independent, and nothing in a crash game keeps count of what it owes.
Session versus long run
A return figure describes an enormous number of rounds; one evening is a tiny slice of that, and almost any result fits it. Keep that difference in mind whenever this crash game glossary mentions a percentage.
Frequently asked questions
What is the difference between a cash-out and an auto cash-out?
A cash-out is the button you press during the climb to leave the round at the current multiplier. An auto cash-out is a multiplier you set before the round, at which the stake closes by itself. Both lose the stake if the round stops first. JetX lets each of its two stakes carry its own preset, and Aero's auto-play does not force one.
Which terms in this crash game glossary matter most before a deposit?
The return figure and the house edge, because they set the long-run cost of every stake, and the account terms: deposit wagering, withdrawal caps, instalments, KYC thresholds and document deadlines. A 97% return means 3% of turnover is the expected cost. A cap such as US$8,000 a week at Wolfbet decides how fast a large balance can leave.
What is a nonce in a crash game?
A counter that rises by one with each round played under the same pair of seeds. It lets the same server seed and client seed produce a different result every round, and it is one of the values you need, with the revealed server seed and your client seed, to recompute a finished round.