The first computer games go back to the 50s when a nought and crosses game was created using an EDSAC computer. An effort at MIT ten years later led to a the multiplayer Spacewar game developed in a PDP-1. Even though these games were primitive, a game industry was born with the first games available in special locations – arcades. Today’s games are produced with modest Hollywood budgets and some are selling more than box-office hits. he Internet is becoming a practical platform for the games. The growth is in both on-line games and connectivity of games. A new genre of games has appeared – casual games. These are simple and short games that people can play for short sessions. In this lecture we look at computer games and the gaming market. Also we cover the impact of gaming and the trends.