A countermeasure agency was started, and the UGSF were kept up with a series of investigations, relating to the UIMS. As a response to this incident, the United Galaxy Space Force (UGSF) is sent out to investigate only to discover the first threat to humanity: the Unknown Intellectual Mechanized Species (UIMS), a race of machines which are of various sizes, made up of inorganic substances, one of which is called "Live-Weapon". Several of the planets, including the fictitious planet Alpha, which is located at the edge of the galaxy cut off the communications, following an observational data of uncontrollable crustal movements. Galaxian 3 was set in the time when humanity made their first attempt to travel beyond their Solar System, and rushes into the days of space exploration. The attraction eventually closed with the rest of the Wonder Eggs theme park in 2000. There was also a simplified version of the attraction ("M8774-C"), for 16 players which did not have as many of the features as the original 28-player version. As opposed to the 6-player arcade version, the theme park version had a 360-degree display using 16 projectors each being 120 inches diagonally and seated 28 players simultaneously (in a hydraulic gaming arena). Four years later, the scaled-down, Theater 6 arcade version ("M8774-E") was released (with its sequel, Attack of the Zolgear labelled as "M9083-D"). The production version ("M8774-D") later debuted at Namco's Tokyo theme park Wonder Eggs in 1990 with the Project Dragoon subtitle, which would be used for all subsequent versions. Galaxian 3 was originally an attraction that debuted in prototype form (labelled as "M8774-B") at Expo '90 in Osaka. A simplified 4 player version was later released for the original Sony Playstation in Japan and Europe. It was one of only two games that were released for Namco's " Theater 6" arcade system, the other being its immediate sequel, Attack of the Zolgear, which was released in 1994. Each player shares the same life meter and takes the role of one of many stationary gunner positions (up to twenty-eight players for the park attraction, and six for the Theater 6 version), who are defending a spaceship called the "Dragoon" (hence the later subtitle) against an onslaught of enemy ships as the players try to destroy a space station called the Cannon Seed. It uses multiple Namco System 21 boards with synchronized laserdisc players (up to sixteen boards and laserdisc players in the original park attraction, and two in the "Theater 6" version) to create the pre-rendered backgrounds of the game. It is a walk-in style arcade game run upon a hybrid of laserdisc and traditional arcade hardware. Galaxian 3 (also known as Galaxian³: Project Dragoon) is an amusement park attraction with elements of an arcade game released by Namco in 1990 which was later released as a scaled-down arcade cabinet in 1994. Horizontal orientation, Raster, 496 x 480 resolution Namco System 21 boards with LaserDisc drives