Digital Plinko uses Galton board physics to mimic real-world peg interactions,...

https://iris-wiki.win/index.php/What_Is_the_Simplest_Explanation_of_RNG_for_Non-Math_People%3F

Digital Plinko uses Galton board physics to mimic real-world peg interactions, delivering unpredictable, yet mathematically sound drops. For fairness, many versions rely on certified RNGs ensuring each bounce is truly random