Light Casino game fairness: RNG testing and RTP

Slots and digital table games get their results from a random number generator (RNG): software whose numbers the game turns into reel positions, cards or a pocket on the wheel. A player needs to know two things: that those numbers are unpredictable, and that nobody can adjust the game while it runs.

Regulators set technical standards for both, and testing laboratories check games against them. The UK Gambling Commission’s standards are a public example. Results must be “acceptably random” under generally accepted statistical tests, a game may not shift its odds in response to play, and its rules, payouts and probabilities may not change while it is available.

Who issued it

A named testing laboratory, with a certificate reference and a date of issue. A certificate that names no laboratory proves nothing.

What it covers

The generator, named games, or the platform. These are separate checks: a certificate for the generator says nothing about a game’s RTP.

Which version, and when

Software is tested by version, on a date. A certificate from before a major update describes the software as it was then.

Who it was issued to

The operator of the tested system, or the game’s studio. For this site that is Lucenthra Gaming Limited, or the studio named in the game’s information screen.

What Stochavia Labs tested for Light Casino, and when, is set out in its certificate SL-2026-0417, issued on 26 August 2026. The next annual audit is due by 26 August 2027.

Return to player (RTP) is the share of all the money staked on a game that it pays back as winnings. Two different figures share the name, and they answer different questions: what the game is built to pay, and what it has actually paid.

Theoretical RTP

The return the game is designed to pay, calculated from its rules and paytable. It is the figure stated in the game’s information screen. At 96%, 96 of every 100 staked come back as winnings across a very large number of rounds.

Observed RTP

What the game has actually paid over a period: winnings divided by stakes. Over a short run it can sit far above or below the theoretical figure; as rounds accumulate, it moves towards it.

Volatility

How widely results swing around the average. A high-volatility game pays rarely and in large amounts, a low-volatility one often and in small amounts, so two games with the same RTP can play nothing alike.

An example with round numbers: 200 spins at 1 each on a 96% slot is 200 staked, with an average return of 200 × 96% = 192. A real run of 200 spins can end far from that in either direction. The 96% describes millions of spins, not one evening.

The UK Gambling Commission describes how operators monitor each game’s actual RTP against its theoretical figure, with a tolerance that narrows as the volume of play grows.

Open the game’s information screen, usually behind an “i” or the game’s menu. Its paytable and rules explain how wins are paid and state the RTP. The UK Gambling Commission, for one, requires that information to be easy to find before a player bets.

In the Light Casino lobby, each game’s RTP is also shown in the information panel that opens from the “i” on its tile, before the game starts. If the lobby and the game ever disagree, tell Light Casino support: one of the two is wrong.

A live table is a real dealer with real cards or a real wheel, streamed from a studio. The result comes from the cards and the wheel, not from a random number generator, so an RNG certificate does not cover it.

Live tables at Light Casino are streamed from Evolution’s studios.

The round was interrupted

Your connection or a server failed during a round. Reopen the game: it should show that round’s result, or return you to where you were in a game with several stages. The UK Gambling Commission’s standards, for example, expect such a game to be restored to its last known state, and a stake to be returned if the round stopped before any result was generated.

The game went wrong

The game did something its rules do not allow, such as paying the wrong amount or showing a result it cannot produce. Under section 8.3 of the Light Casino terms, bets and wins affected by the fault are void, and the stakes on the affected rounds are returned to your balance.

If it happens to you

1. 1 Write down the details The game, the time, your stake and what you saw, plus the round number if the game’s history shows one.
2. 2 Take a screenshot Of the error, your balance and the history entry, before you close the game.
3. 3 Contact support As soon as you can, and within 180 days, with those details in your first message.
4. 4 Escalate if it is not settled The complaints procedure covers a formal complaint and independent review by the Quellmont Dispute Resolution Service.