Rainbet Originals: ten games and one idea worth understanding

The Originals are Rainbet’s own games rather than licensed studio titles, and they share a look — stripped back, no reels, no paylines, no bonus rounds. What they share more importantly is provable fairness, and that is the part of this page worth your attention, because it is the one genuine consumer protection on this site that does not depend on a licence.

The ten are Plinko, Mines, Dice, Limbo, Crash, Wheel, Keno, Hilo, Tower and Chicken Cross.

Provably fair, explained properly

Most explanations of this are either two sentences of marketing or a cryptography lecture. Here is the middle version.

The problem provable fairness solves is simple to state: when you play an online game, how do you know the result was not decided after you placed your bet, in the operator’s favour? Normally you cannot know. You rely on a testing laboratory having audited the random number generator, and on a regulator having required that audit. You trust two institutions.

Provable fairness removes the trust. Three inputs determine every round:

1. The server seed. A random string generated by Rainbet. Before you play, you are shown a cryptographic hash of it — a fixed-length fingerprint from which the seed itself cannot be recovered. This is the commitment: it pins the seed down before your bet without revealing it.
2. The client seed. A string you control and can change whenever you like. Because you contribute an input, the operator cannot know the combined result in advance.
3. The nonce. A counter that increments each round, so identical seeds still produce different outcomes.

After the round, the server seed is revealed. You can then do two checks. Hash the revealed seed and confirm it matches the fingerprint you were shown beforehand — proving the seed was not swapped. Then feed all three inputs through the published algorithm and confirm it produces the result you actually got.

If the operator had altered anything, the hash would not match. It is not a promise; it is arithmetic, and you can run it yourself.

What it does not do

Being precise here matters, because provable fairness is routinely oversold.

It does not remove the house edge. Every Original has one. Verification proves the result was honest, not that the game was even money. A provably fair game at 96% RTP still keeps four cents of every dollar.

It does not guarantee you get paid. Verifying that a round was fair is a different thing from an operator processing your withdrawal, honouring a bonus term, or not closing your account. Those are licensing and conduct questions, and no amount of cryptography touches them.

It does not require you to use it. Almost nobody verifies every round. The value is that the check exists and anyone can run it, which is what makes tampering detectable and therefore not worth attempting.

That said, for a New Zealand player specifically, this is worth more than it might be elsewhere. Under the Online Casino Gambling Act 2026 a licensed operator will be supervised by the Secretary for Internal Affairs, with minimum technology standards under section 80 and a complaints route that leads somewhere. Rainbet has none of that. Provable fairness is the one assurance on this site that works without a regulator behind it — which is exactly why it deserves more than a marketing line.

The games

Dice is the simplest and the best place to start. Pick a target number and whether you are betting over or under it. The interface shows you the exact win probability and the exact multiplier, and the relationship between them is the house edge made visible. Understand Dice and every other game here becomes legible.

Limbo works the same way from the other direction. Choose a target multiplier; a random multiplier is generated; you win if it lands above your target. Higher targets mean lower probability and larger payouts, on a curve you can see.

Crash shows a multiplier rising from 1.00x and you cash out before it stops. Stop too early and you take a small win; too late and you take nothing. The whole game is one decision under time pressure, repeated — which makes it the most compelling of the ten and the one where a preset auto-cashout is most worth using.

Mines puts hidden bombs on a grid. Each safe tile raises the multiplier; one bomb ends the round. You choose how many mines, which sets the risk. It is Minesweeper reduced to its gambling core, and the tension of an extra tile is the point.

Plinko drops a ball through a peg pyramid into multiplier buckets. Choose the risk level and the number of rows; higher risk widens the spread between the middle buckets and the edges. It runs fast and it automates well, which is precisely why a session budget matters here.

Wheel spins a segmented wheel with configurable segments and risk. Straightforward, and the risk setting changes the distribution rather than the expected return.

Keno picks numbers from a grid and pays on matches. A lottery mechanic on demand, with the payout table scaling by how many you selected.

Hilo deals a card and you call whether the next is higher or lower, building a multiplier chain. Each correct call increases the payout and the temptation to continue.

Tower is a climb: pick the safe tile on each level, and each successful level raises the multiplier. Cash out at any point or lose everything on a wrong pick.

Chicken Cross is a road-crossing run where each lane survived adds to the multiplier and the risk setting determines how dangerous the traffic is.

The shape of these games

A pattern runs through nearly all ten, and it is worth naming because it changes how you should play them.

Most of these are incremental-risk games: you accumulate a multiplier step by step and choose when to stop, and stopping is always available and always feels premature. Crash, Mines, Tower, Hilo and Chicken Cross are all built on that structure. It is a genuinely well-designed piece of game feel, and it is also the mechanism by which a session gets longer than intended.

The countermeasure is unglamorous and effective: decide the cash-out point before the round starts, and use auto-cashout where it is offered. A rule set in advance is worth more than judgement applied under pressure, because the pressure is the design.

The second characteristic is speed. These games run far faster than pokies — no reel animation, no bonus round. A round can take three seconds. At that pace, a stake that looks trivial produces turnover that is not: a $1 round every three seconds is $1,200 an hour of exposure. Set stakes against the pace, not against how small each individual round feels.

Risk settings and RTP

Most Originals let you set a risk level, and it is commonly misunderstood.

Raising the risk widens the distribution — bigger possible wins, more frequent losses. It does not usually change the RTP, which stays roughly constant across settings. What changes is variance, and therefore how long a given bankroll survives.

RTP across the set typically sits in the 96 to 99 per cent range, which is better than most pokies. The published figure for each game is in its information panel, and that is the number to check rather than a general claim.

Demo mode

All ten have a free demo using virtual credits. It is the right way to learn what a risk setting actually does to the shape of the returns, and to feel the pace before real money is involved.

The usual caution applies. A short demo run on a high-variance setting tells you nothing about expected value in either direction. Use it to learn mechanics, not to form a view about whether a game “pays”.

Where they fit

The Originals are the most interesting part of Rainbet and the easiest to play too much of. Better RTP than most pokies, verifiable fairness, and complete transparency about the odds on every round — against a pace and a stop-when-you-choose structure that is engineered to keep you in.

Play them with a preset stop and a stake sized for the speed, and they are the best value on the site. Play them without either and the speed does the work the house edge would otherwise take much longer to do.

The casino page covers the third-party catalogue, and the VIP page explains how rakeback applies to Originals play like any other.

18+ only. Only play with money you can afford to lose. Free, confidential help is available from the Gambling Helpline on 0800 654 655, 24 hours a day, or by texting 8006. See responsible gambling.

Last updated: 2 September 2026