Game of skill in the context of Dice

Kottabos (Ancient Greek: κότταβος) was a game of skill played at Ancient Greek and Etruscan symposia (drinking parties), especially in the 6th and 5th centuries BC. It involved flinging wine-lees (sediment) at a target in the middle of the room. The winner would receive a prize (κοττάβιον or "kottabion"), comprising cakes, sweetmeats, or kisses.

Ancient writers, including Dionysius Chalcus, Alcaeus, Anacreon, Pindar, Bacchylides, Aeschylus, Sophocles, Euripides, Aristophanes, and Antiphanes, make frequent and familiar allusion to the practice; and it is depicted on contemporaneous red-figure vases. References to the practice by the writers of the Roman and Alexandrian periods show that the fashion had died out. In Latin literature, it is almost entirely unknown.

Mahjong (English pronunciation: /mɑːˈdʒɒŋ/ mah-JONG; also spelled mah jongg, mah-jongg, and mahjongg) is a tile-based game that was developed in the 19th century in China and has spread throughout the world since the early 20th century. It is played by four players (with some three-player variations found in parts of China, Japan, South Korea, Vietnam, and Southeast Asia). The game and its regional variants are widely played throughout the Sinosphere in East and Southeast Asia and have also become popular in Western countries. The game has also been adapted into a widespread form of online entertainment. Similar to the Western card game rummy, mahjong is a game of skill, strategy, and luck. To distinguish it from mahjong solitaire, it is sometimes referred to as mahjong rummy.

The game is played with a set of 144 tiles based on Chinese characters and symbols, although many regional variations may omit some tiles or add unique ones. In most variations, each player begins by receiving 13 tiles. In turn, players draw and discard tiles until they complete a legal hand using the 14th drawn tile to form four melds (or sets) and a pair (eye). A player can also win with a small class of special hands. While many variations of mahjong exist, most variations have some basic rules in common including how a piece is drawn and discarded, the use of suits (numbered tiles) and honors (winds and dragons), the basic kinds of melds allowed, how to deal the tiles and the order of play. Beyond these basic common rules, numerous regional variations exist which may have notably different criteria for legal melds and winning hands, radically different scoring systems and even elaborate extra rules. A group of players may introduce their own house rules which can notably change the feel of play.

A game of chance is in contrast with a game of skill. It is a game whose outcome is strongly influenced by some randomizing device. Common devices used include dice, spinning tops, playing cards, roulette wheels, numbered balls, or in the case of digital games random number generators. A game of chance may be played as gambling if players wager money or anything of monetary value.

Alternatively, a game of skill is one in which the outcome is determined mainly by mental or physical skill, rather than chance.

An arcade game or coin-op game is a coin-operated entertainment machine typically installed in public businesses such as restaurants, bars and amusement arcades. Most arcade games are presented as primarily games of skill and include arcade video games, pinball machines, electro-mechanical games, redemption games or merchandisers.

Electro-mechanical games (EM games) are types of arcade games that operate on a combination of some electronic circuitry and mechanical actions from the player to move items contained within the game's cabinet. Some of these were early light gun games using light-sensitive sensors on targets to register hits, while others were simulation games such as driving games, combat flight simulators and sports games. EM games were popular in amusement arcades from the late 1940s up until the 1970s, serving as alternatives to pinball machines, which had been stigmatized as games of chance during that period. EM games lost popularity in the 1970s, as arcade video games had emerged to replace them in addition to newer pinball machines designed as games of skill.

Redemption games are typically arcade games of skill that reward the player proportionally to their score in the game. The reward most often comes in the form of tickets, with more tickets being awarded for higher scores. These tickets can then be redeemed (hence the name) at a central location for prizes. The most inexpensive prizes (candy, small plastic or rubber toys) may require only a small number of tickets to acquire, while the most expensive ones (skateboards, low-end electronics) may require several thousand. In general, the amount of money spent to win enough tickets for a given prize will exceed the value of the prize itself. Some redemption games, such as Flamin' Finger, involve elements of chance, which can be set by the operator.

A variation on the ticket-based redemption game is the merchandiser, which directly displays and dispenses merchandise, rather than dispensing tickets which are then redeemed for prizes. Arcade games that offer no prizes are known as non-redemption games.

Cue sports are a wide variety of games of skill played with a cue stick, which is used to strike billiard balls and thereby cause them to move around a cloth-covered table bounded by elastic bumpers known as cushions. Cue sports, a category of stick sports, may collectively be referred to as billiards, though this term has more specific connotations in some English dialects.

There are three major subdivisions of games within cue sports: