Dejarik

Dejarik, also known as holographic chess or holochess, is a primarily-fictional board game appearing in the Star Wars space opera franchise that uses holographic figures as pieces. The game has been roughly described as that universe's equivalent of terrestrial chess since it is played on a board with a chequered pattern, each piece has a specific way of moving and attacking, and if it lands on a spot occupied by an opponent, it destroys the other piece. Over the years, several official and fan-made replicas have been made. As of 2021, no single, official rule set for the game has been released, and instead, a number of different rule sets (mostly designed by fans) for the game co-exist. Even the number of figures to be used in the game is unclear, although the best known variant uses eight.

The game debuted in the 1977 film Star Wars, in a scene on board the Millennium Falcon being played R2 and chewie it is implied that Chewbacca won the game. It is notable as one of the classic, early examples of holograms, 3D and AR in fiction.