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Each played spin has a serial number , and you can see the history of all spins played in a particular casino. I'm curious when I play a spin, does the RNG give the same outcome for all players who played at that moment?

HI!

Honestly, I think there might be a bit of confusion about how RNG and RTP work.

"Each played spin has a serial number" – in real online slots, individual spins aren’t typically numbered in a way players can see; the casino might have internal IDs, but they’re not visible to you.

"History of all spins" – it might seem like you could check the results of every spin other players have made, but regulated casinos don’t provide that; each spin is independent and generated randomly for each player.

"Does the RNG give the same outcome for all players who played at that moment?" – the RNG doesn’t produce the same result for everyone at the same time; every spin is independent.

So it seems like there’s a misunderstanding about how spin history and RNG actually work, which is totally understandable... these systems aren’t very visible from a player’s perspective.

Thanks for the quick answer,..you explain that very clearly. and there's something else I'm interested in; I hear on various forums, from some long-time players who avoid playing in certain casinos, because they use pseudo RNG. can you tell me more about that?

Glad you brought that up! it’s a common term that can easily cause confusion.

Technically, all RNGs in software are "pseudo RNGs," because they are algorithms rather than pure randomness. The key difference is whether they’ve been tested and certified by independent labs. Licensed casinos are required to use certified RNGs that meet strict standards for fairness and unpredictability.

Where things get messy is with unlicensed or fake casinos. There really are scams, often copies of well-known games where the "RNG" is manipulated and the RTP is set to whatever the operator wants. That’s not a legitimate pseudo RNG; it’s just rigged software. And yes, those sites can hand out easy wins at first and then tighten the game later to push players into deposits.

So, my advice is never play in an unlicensed casino with poor reviews and vast and insane bonuses or sky-high withdrawable amounts, especially when you accumulated the winnings with ease. Players usually do not want to hear it, but real slots are about losing. Scams are quite the opposite these days. Check out this thread. 👈👈

You wrote: Does the RNG give the same outcome for all players who played at that moment?" – the RNG doesn’t produce the same result for everyone at the same time; every spin is independent.

in fact, it's as I have my own personal rng, and over time RNG will give me all 100 million possible combinations?

I see what you mean, but it’s a bit different from how online slots actually work.

Each spin is independent, so there isn’t a personal RNG assigned to each player. The RNG doesn’t cycle through all possible combinations for you individually over time. Instead, every spin is generated randomly and independently, which means outcomes can repeat or vary in any order, and there’s no guarantee you’ll see every possible combination.

Because of this, some popular player myths don’t hold true. For example, playing a slot at the same time as many other players doesn’t make big wins more likely, there is no "prime time" for slots.

It’s totally understandable that it can feel like there might be patterns, but in reality, the system treats all spins independently for all players, with no personal RNG.

Yeah, RNG kinda feels like magic cause you don’t see the wires, but it’s not some global "same spin for all" lottery. It’s just math rolling fresh every click. No memory, no cosmic list of spins you can peek at. RTP is long-term math, RNG is short-term chaos. People mix them up cause casinos never show the guts, only the glitter.

It's good to read about it more so players can understand the difference, right?

Good that we have many options where we can find information.

In fact, I can still see my cosmically long list of spins played, in the last slot transaction field. it's an endless column of loss after loss... so the RTP of 97% is just a casino fabrication,. the long term return to players varies from 20 to 30%, depending on the deal between the casino and the provider, and the longer you play the rtp gets lower and lower. The RNG is not random at all, but depends on the total payment, and the casino has full influence on it, it can always press the stop button, and then the RNG gives a winning spin with a multiplier exclusively from ×0.1 to 0.9. and that is no gain. I pay a dollar and I get 10 cents :), yes, this is not my theory, but I am quoting a man who has been working as an algorithm programmer for Casino for 30 years. Voja Antonić, maybe the casino guru could do an interview with him? in Serbia, he made the first "galaxy" computer back in the 80s, now he works in Pasadena for slot providers. he is very critical of casinos, and he never misses an opportunity to always say that slots should not be played at all, especially online. because he created an algorithm for the "player tracking" program, which casinos now use against players, as well as software that literally creates a psychological profile of players, a "self learning machine", all with the aim of making passionate gamblers out of us, and to take as much money as possible from us, and to create the illusion that we could take money, but alas, we were greedy and wanted more, so we lost everything in the end...

I see a couple of different concepts getting mixed together here, so just to clear things up for anyone new reading along:

RNG vs. RTP – The Random Number Generator is what creates each spin result in real time. It doesn’t have memory, and the casino can’t "press a button" to change the math on the fly. RTP is the long-term average payout built into the game design, and it’s verified by testing labs.

Player tracking – Yes, casinos (especially online) use analytics to see how people play, just like Netflix knows your favorite genres. That’s very different from the slot math itself. It can shape offers or bonuses, but it doesn’t rewrite the outcome of a spin.

Illusion vs. reality – Slots are designed to feel exciting and unpredictable, and that can push players to play longer than they planned. That part is true, and it’s why knowing how RNG and RTP actually work is important if you want to play responsibly.

So in short: when it comes to original games tested in labs, there’s no cosmic list, no magic stop button, and no hidden 20% RTP deal. Just RNG, variance, and a business model that makes sure the house always has an house edge. Slots are the least profitable games for the players.