Crash and instant win settle in software and live dealer settles on a physical table, which is why only one of the three leaves a player anything to recompute.
- The UK Gambling Commission requires RNG and game results to be “acceptably random”, and a software RNG’s next output to be computationally infeasible to predict without its algorithm and seed. (RTS 7)
- UKGC RTS 17 requires live dealer operations to be fair and independently auditable. (RTS 17)
- GLI-14 defines a finite electronic ticket as a predetermined outcome distributed from a finite game set. (GLI-14)
How does a crash round work?
A crash round normally opens with a betting window. A player selects a stake and, where the game allows it, one or more cash-out instructions. Once betting closes, the displayed multiplier starts at a low value and climbs. The round ends when it reaches its predetermined crash point: the multiplier stops, the active bets that have not cashed out lose, and bets cashed out earlier pay at the multiplier recorded at that instant.
The climbing curve is not usually a live measurement of a random process that is deciding, frame by frame, whether to crash. The important distinction is timing: the outcome is determined at round start, while the animation reveals the consequence progressively.
The player’s meaningful input is the cash-out decision. A manual cash-out stops that bet at the current multiplier; it does not stop the round for anyone else. If the interface offers auto-cashout, the player sets a target and the system submits the cash-out when the moving multiplier reaches that target, subject to the game’s stated timing rules.
In a conventional software implementation, randomness sits in the system that selects the terminal multiplier. It is embedded in those rules: across repeated play, the probabilities and payouts are structured so the expected return is below the amount staked.
Does “provably fair” mean a player can predict the round?
Some crypto-native implementations add an audit trail through a provably-fair mechanism. Before a round, the operator can publish a commitment—a hash of a hidden server seed—without revealing the seed itself. The round then combines the revealed server seed, a client seed and often a nonce according to the published algorithm. Afterward, revealing the server seed lets a player hash it to test the earlier commitment and recompute the result from the inputs. This makes a particular round checkable; it does not make the player able to predict an unrevealed server seed, and it does not remove the house edge from the payout mapping.
That is the practical boundary of “provably fair”: verification after the fact, rather than control before the fact. It also explains why the distinction between ordinary RNG and verifiable randomness matters in the VRF-versus-RNG comparison: both concern how an outcome is generated, but they offer different ways to establish confidence in it.
When is an instant-win outcome decided?
An instant-win game is a single-outcome play rather than a spin cycle. The player pays or stakes, and a scratch-style surface, reveal button or single draw exposes whether that play carries a prize. In a properly specified game, the win or loss is already determined at the point required by its rules—commonly when the play is purchased or issued—and the display simply discloses it.
There are two important architectures. A finite system prepares a bounded game set containing winning and losing outcomes, assigns each a prize level, and distributes tickets without replacement. GLI-14’s model has a central system randomly select a predetermined electronic ticket, then send it to the player terminal for display and payment. A prize table and the number of outcomes at each level exist before the individual play is drawn; as tickets leave the set, the remaining composition changes.
Other instant-win products use a per-play RNG. In that design, the software generates the outcome for the individual play, then applies the game’s prize table. Neither description, by itself, tells a player the precise expected return: that requires the rules, prize table, probabilities and any jurisdictional disclosures.
What the player controls is usually the purchase, stake and perhaps the timing or manner of revealing the result. Scratching faster, choosing a symbol or pressing reveal does not alter a predetermined outcome unless the rules expressly make that selection part of the game. The house edge sits in the relationship between the price of the play, the prize table and the odds—not in the theatrical act of scratching.
Where does randomness come from in a live dealer game?
A live dealer game puts a real table event between the wager and the result. A croupier deals physical cards, spins a physical wheel or throws physical dice in a studio or casino, and cameras stream that event to the remote interface. Bets close under the game’s rules; the physical procedure runs; the outcome is recorded and winning and losing bets are settled according to the published table rules.
Here, randomness comes from the physical event rather than an RNG selecting a virtual card or wheel position. The UK Gambling Commission’s live-dealer standard also calls for commercial-casino-quality equipment, trained croupiers, supervision, surveillance and game logs.
A viewer cannot normally recompute a wheel spin or card shuffle from the stream in the way a disclosed seed and algorithm can reproduce a crash result. Video is evidence of what was shown, not a mathematical proof that the unseen physical conditions were unbiased. The house edge instead comes from the rules and payouts—such as the relationship between winning chances and the amount returned—not from the fact that a camera is present.
The contrast is the point. Crash and many instant-win implementations put randomness in software, where testing, records or a provably-fair commitment can support trust or verification. Live dealer puts the decisive event in the physical world, where observation and operational controls support confidence but do not provide a replayable calculation. In every case, the player’s visible choices are narrower than the screen may suggest: cash-out timing in crash, purchase or reveal in instant win, and betting choices before the live event.
Also: three questions separate these formats faster than any label on the lobby tile. When is the outcome fixed? What input can still change it? And can the result be recomputed, audited, or only observed? Crash answers the third with a seed, live dealer answers it with a table, and “random”, “fair” and “instant” mean something different in each of them.
Sources:
- https://www.gamblingcommission.gov.uk/standards/remote-gambling-and-software-technical-standards/rts-7-generation-of-random-outcomes
- https://www.gamblingcommission.gov.uk/standards/remote-gambling-and-software-technical-standards/rts-17-live-dealer-studios
- https://gaminglabs.com/wp-content/uploads/2018/09/GLI-14-v2-2-Standard.pdf