Licensing and certification
A slot licence is not about a player account but about the game itself: before a game is released on a regulated market, its random number generator (RNG) and stated return to player are checked by an independent test lab. The regulator requires this certificate before the game may be offered.
The certificate covers exactly the version of the game that was tested. That is why one game can have several certified RTP versions — for example 96, 94 and 92 percent — and each of them is a separately checked build. The figure on our game pages is the developer’s default version, and games in the RTP range series are marked separately.
We do not publish licence numbers we have not seen in the source, and we do not assume a certificate exists. The method is explained in full on the How we test page.
The game’s RTP, volatility and max win are read from the game’s info panel or the developer’s game data. If a figure is missing, it is marked as missing.
Frequently asked — licenses
What a certificate tells you about a game
Who checks a slot game?
An independent test lab checks the game’s random number generator and return to player before release. On regulated markets the regulator requires this certificate.
Why does one game have several RTP figures?
A developer can certify several return versions of the same game. The name and graphics stay the same, but the return differs. Always check the figure in the game’s own info panel before playing.
Does a certificate guarantee a win?
No. A certificate says that spins are drawn at random and that the long-run return matches the stated figure. A single session can end either way.
