How RNG, RTP, and House Edge Work in Online Table Games

Online table games may look simple from the user's perspective: open a game, choose an action, and receive a result.

Behind that interface, however, there can be several layers of software, probability, streaming technology, security, and game logic.

For developers and technically curious readers, three concepts are especially useful to understand:

RNG, RTP, and house edge.

Let's look at what each one means and how they relate to modern online table games.

RNG: Random Number Generation

RNG stands for Random Number Generator.

In software-based casino-style games, an RNG is used to produce unpredictable outcomes.

The game interface users see is only the presentation layer. Underneath it, the application needs a mechanism for selecting outcomes according to the game's mathematical rules.

Conceptually, you can imagine something like:

javascript
function randomOutcome(max) {
  return Math.floor(Math.random() * max);
}