Online games use random number generators (RNGs) to ensure their odds match the payout of land-based casinos. Mathematical analysis should indicate the payout will average over time.

The game is designed to be random, and the odds of each number or color coming up are the same on every spin. There is no strategy or pattern that can reliably predict the outcome of a roulette spin.

It is possible for a player to hit a jackpot on a number of occasions in specific plays, but this is a purely random part of the gameplay developed through the use of algorithms. Every slot machine at a casino uses something called a par sheet which provides information about the odds for each tile on a reel.

Beyond that, playing slots has no strategy. The only variable is your bet in amount and consistency, it's pure math using a random number generator.