Actua Pool is a sports simulation video game developed by British company Gremlin Interactive as part of their highly successful Actua Sports series of sport simulators of the mid-to-late 1990s. Actua Pool, a pool (pocket billiards) was originally released on the Microsoft Windows platform and the Sony PlayStation home console in 1999; these versions were also published under the name Pool Shark. The game was very well received, praised for its realistic physics engine and challenging AI opponents, although the game spawned a sequel which was not as successful. In 2007, Actua Pool was ported to the Nintendo DS handheld game console, under the title Underground Pool in North America.