If you were to invest/bet/etc on a high volatility environment (e.g casino), would you like to know what are the chances you win? Or better yet worded, what are the chances you may be at risk and lose your money? The most important question remains, how do you simulate all likely scenarios? Is that even possible? Well, in this tutorial we analyze one of the simplest solutions, Monte Carlo simulations. This tutorial assumes you have NodeJS and react tooling installed. The technologies we will discuss in this tutorial are: Typescript and React. We will create a very basic risk assessment model for a casino Roulette game. In this tutorial we will discuss what MonteCarlo simulations are and how they are useful in several areas (gambling, finance, health, etc).