Understanding Random Number Generation
Random Number Generators are computational or physical devices that are used to generate random sequences of numbers or symbols. They have several applications and their theory extends back several years.
One of the things a Random Number Generator is commonly used for is creating lottery and bingo numbers online, and to determine the odds of online blackjack, baccarat, pokies and roulette games. This makes it possible to play online in the first place, so it is very important, and helps to ensure that playing is kept as fair as we at Online NZ Casino require it to be.
Casinos that hold accounts in New Zealand dollars
12 sites that bank in New Zealand dollars, so nothing is lost to conversion. The figures beside each name are the ones the operator publishes.
Listing checked
- 1
SlotLounge Casino
Up to NZ$22,500 + 350 free spins over 4 deposits
- Deposits from NZ$30
- Wagering 40x
- Online since 2025
Terms and operator
Published welcome terms: Up to NZ$22,500 + 350 free spins over 4 deposits, wagering 40x, minimum deposit NZ$30
Operator: Hollycorn N.V. (OCD); other sources: Stable Tech N.V.
Payments and games
Game studios: Evolution Gaming, NetEnt, Playtech, Yggdrasil Gaming, Quickspin, Red Tiger Gaming, Nolimit City, Push Gaming
- 2
SlotsMafia Casino
Welcome package up to NZ$37,500 + 350 free spins
- Deposits from NZ$20
- Wagering 50x
- Online since 2024
Terms and operator
Published welcome terms: Welcome package up to NZ$37,500 + 350 free spins, wagering 50x, minimum deposit NZ$20
Operator: Hollycorn N.V.
Payments and games
Game studios: Games Global, Pragmatic Play, Playtech, Yggdrasil Gaming, Quickspin, Hacksaw Gaming, Relax Gaming, Betsoft
- 3
DragonSlotsTakes bitcoin
Up to NZ$8,000 + 700 free spins over 4 deposits
- Deposits from NZ$20
- Wagering 40x
- Bitcoin withdrawals 3–5 minutes
- Online since 2024
Terms and operator
Published welcome terms: Up to NZ$8,000 + 700 free spins over 4 deposits, wagering 40x, minimum deposit NZ$20
Operator: TechSolutions Group N.V. (reviews); AskGamblers now lists Lumora Digital Ltd
Payments and games
Deposit methods: Visa, MasterCard, Apple Pay, Google Pay, Bank Transfer, Flexepin, Revolut, Bitcoin
- 4
National CasinoTakes bitcoin
100% up to NZ$500 + 100 free spins
- Wagering 40x
- Licence: Canada: Kahnawake Gaming Commission
- Bitcoin withdrawals 3–5 minutes
- Online since 2020
Terms and operator
Published welcome terms: 100% up to NZ$500 + 100 free spins, wagering 40x
Licence on file: Canada: Kahnawake Gaming Commission
Operator: TechSolutions Group N.V.
Payments and games
Deposit methods: Visa, MasterCard, POLi, Neosurf, Skrill, Neteller, Paysafecard, Apple Pay
Game studios: Evolution Gaming, NetEnt, Microgaming, Games Global, Pragmatic Play, Play'n GO, Playtech, Yggdrasil Gaming
- 5
20bet CasinoTakes bitcoin
100% up to NZ$200 + 120 free spins
- Deposits from NZ$20
- Wagering 40x
- Licence: Curacao
- Bitcoin withdrawals Instant
Terms and operator
Published welcome terms: 100% up to NZ$200 + 120 free spins, wagering 40x, minimum deposit NZ$20
Licence on file: Curacao
Operator: TechSolutions Group N.V.
Payments and games
Deposit methods: Visa, MasterCard, Neosurf, Skrill, Neteller, Paysafecard, MuchBetter, Jeton
Game studios: Evolution Gaming, NetEnt, Games Global, Pragmatic Play, Play'n GO, Playtech, Yggdrasil Gaming, Quickspin
- 6
SlotRaveTakes bitcoin
Up to NZ$5,000 + 150 free spins over 4 deposits
- Deposits from NZ$10
- Wagering 40x
- Bitcoin withdrawals Instant
- Online since 2025
Terms and operator
Published welcome terms: Up to NZ$5,000 + 150 free spins over 4 deposits, wagering 40x, minimum deposit NZ$10
Operator: TechSolutions Group N.V. (reviews); AskGamblers lists Galan Operations SRL
Payments and games
Deposit methods: Visa, MasterCard, Neosurf, Skrill, Neteller, Paysafecard, Apple Pay, MuchBetter
- 7
GranawinTakes bitcoin
100% up to NZ$200 + 120 free spins
- Deposits from NZ$30
- Wagering 40x
- Bitcoin withdrawals 3–5 minutes
- Online since 2024
Terms and operator
Published welcome terms: 100% up to NZ$200 + 120 free spins, wagering 40x, minimum deposit NZ$30
Operator: TechSolutions Group N.V.
Payments and games
Deposit methods: Visa, MasterCard, Skrill, Neteller, Paysafecard, Apple Pay, Google Pay, Bank Transfer
- 8
N1Bet CasinoTakes bitcoin
Up to NZ$10,000 + 200 free spins over 4 deposits
- Deposits from NZ$30
- Wagering 50x
- Licence: Curacao
- Bitcoin withdrawals Instant
Terms and operator
Published welcome terms: Up to NZ$10,000 + 200 free spins over 4 deposits, wagering 50x, minimum deposit NZ$30
Licence on file: Curacao
Operator: Stable Tech N.V. (Curacao)
Payments and games
Deposit methods: Visa, MasterCard, Maestro, Neosurf, Skrill, Neteller, Paysafecard, Bank Transfer
Game studios: Evolution Gaming, NetEnt, Games Global, Pragmatic Play, Play'n GO, Playtech, Yggdrasil Gaming, Quickspin
- 9
BitStarz CasinoTakes bitcoin
Welcome package up to NZ$2,000 + 180 free spins
- Deposits from NZ$20
- Wagering 40x
- Licence: Curacao
- Bitcoin withdrawals 3–5 minutes
Terms and operator
Published welcome terms: Welcome package up to NZ$2,000 + 180 free spins, wagering 40x, minimum deposit NZ$20
Licence on file: Curacao
Payments and games
Deposit methods: Visa, Visa Credit, MasterCard, Maestro, Neosurf, Skrill, Neteller, Paysafecard
Game studios: Evolution Gaming, NetEnt, Microgaming, Pragmatic Play, Play'n GO, Playtech, Yggdrasil Gaming, Quickspin
- 10
22bet CasinoTakes bitcoin
100% up to NZ$500
- Wagering 50x
- Licence: Canada: Kahnawake Gaming Commission
- Bitcoin withdrawals 3–5 minutes
- Online since 2017
Terms and operator
Published welcome terms: 100% up to NZ$500, wagering 50x
Licence on file: Canada: Kahnawake Gaming Commission
Operator: TechSolutions Group N.V. / Marikit Holdings Ltd
Payments and games
Deposit methods: Visa, MasterCard, Maestro, Neosurf, Skrill, Skrill 1-Tap, Neteller, Paysafecard
Game studios: Evolution Gaming, NetEnt, Microgaming, Games Global, Pragmatic Play, Play'n GO, Quickspin, Red Tiger Gaming
- 11
All Slots Casino
100% welcome package up to NZ$1,500
- Deposits from NZ$5
- Wagering 35x
- Licence: Malta Gaming Authority
- Skrill withdrawals 0–2 hours
Terms and operator
Published welcome terms: 100% welcome package up to NZ$1,500, wagering 35x, minimum deposit NZ$5
Licence on file: Malta Gaming Authority
Operator: Baytree Interactive Ltd (69691), Guernsey
Payments and games
Deposit methods: Visa, MasterCard, Maestro, Neosurf, Skrill, Skrill 1-Tap, Neteller, Paysafecard
Game studios: Evolution Gaming, NetEnt, Microgaming, Games Global, Pragmatic Play, Red Tiger Gaming, Big Time Gaming, ISoftBet
- 12
Betway CasinoTakes bitcoin
100% up to NZ$500 on each of first 4 deposits
- Deposits from NZ$20
- Wagering 50x
- Licence: Malta Gaming Authority
- Bitcoin withdrawals 3–5 minutes
Terms and operator
Published welcome terms: 100% up to NZ$500 on each of first 4 deposits, wagering 50x, minimum deposit NZ$20
Licence on file: Malta Gaming Authority
Payments and games
Deposit methods: Visa, Visa Electron, MasterCard, Maestro, POLi, Neosurf, Skrill, Skrill 1-Tap
Game studios: Evolution Gaming, NetEnt, Microgaming, Games Global, Pragmatic Play, Play'n GO, Big Time Gaming, Hacksaw Gaming
A reference list, not a recommendation, and only for readers aged 20 and over. The operators are offshore and unlicensed in New Zealand until the Department of Internal Affairs begins issuing licences on 1 December 2026. Terms are as published and change without notice. Gambling Helpline: 0800 654 655.
When Random Number Generators are discussed with regard to online casinos, the name denotes a piece of software in the overall platform that is powering the playing destination. It’s not overstating their importance to say that these Generators are what make online gameplay possible in the first place!
Traditional Casino Action Translated
With the original land-based casino games all of the action was naturally random, unless complicated deceptions were involved, and results were naturally random. As more games became digitised, and then as online casinos grew in popularity, this randomness needed to be recreated in a way that was absolutely trustworthy.
That’s just where Random Number Generators come in to online casino games! Once you’ve selected your craps, keno, blackjack, baccarat or pokies game, and before you have even started to play, the Random Number Generator in the software at the online casino you’ve chosen to play at starts to work.
Several hundred number combinations are produced per second, so the sequences are kept completely arbitrary. If you choose a playing destination with reputable software, as all of the Online NZ Casino options are, you’ll have the same chances of winning as if you were playing offline at a live casino.
The new wave of live dealer games doesn’t require such Random Number Generation, of course, but for the conventional online casino games it’s very important. If you feel unsure about the practices at a prospective casino, check whether they’ve been endorsed for fairness and safety which usually means they are using a Random Number Generator, or do a little research and reading of a few reviews before you play any of the casino games on offer for real money.
Basic Mechanics
The way Random Number Generators in online casino software work is to use a starting number, often called a Seed Number, and calculate a new and random number based on that seen via a very complicated algorithm.
The new number becomes the Seed, and the process continues. The numbers are huge and, although they are calculated from the ones that came before, there is no way to predict them. It would be possible, in theory, if it were possible to find out what the original Seed Number was going to be, but these are very closely guarded.
Online casinos might also rig their generators, but the third party auditing that every casino approved by us goes through should negate that. Ultimately Random Number Generators are not completely random but they do provide good levels of fairness. Next time you’re enjoying your favourite casino games at one of our top rated sites, remember that you have a Random Number Generator to thank!
