Game of skill
A game of skill is a game where the outcome is determined mainly by mental or physical skill, rather than by chance. A game of skill generally has an element of chance, but skill plays a greater role in determining the outcome.
Most games of skill also involve a degree of chance, due to natural aspects of the environment, a randomizing device (such as dice, playing cards or a coin flip) or guessing due to incomplete information. Some games of skill such as poker may involve bluffing and other forms of psychological warfare.