A game of chance is determined as a game where the outcome is heavily influenced by randomness, such as the RNG mechanics of online slots. A game of skill is one in which the outcome is determined mainly by mental or physical dexterity rather than chance. The grey area is when the game contains both, such as poker, where there are elements of chance and luck from the cards, but also a skill element is knowing which cards give the best percentage chance to win a hand.