A gamer is a person who plays interactive games, especially video games, tabletop role-playing games, and skill-based card games, and who plays for usually long periods of time. Some gamers are competitive, meaning that they compete in some games for money. There are many different gamer communities around the world.

A language game (also called cant, secret language, ludling, or argot) is a system of manipulating spoken words to render them incomprehensible to the untrained ear. Language games are used primarily by groups attempting to conceal their conversations from others.