Gaplus

is a 1984 fixed shooter video game developed and published by Namco for arcades. It was released in North America by Bally Midway. It is the third game in the Galaxian series, serving as a direct sequel to Galaga (1981). In North America, a modification kit was later released to change the name to Galaga 3, possibly to reflect its position in the series. It was the only game other than Phozon to run on the Namco Phozon hardware. A contemporary home port for the Commodore 64 was released in 1988. A demake version of the game (in the style of Nintendo Entertainment System games) was included in Namco Museum Archives Vol. 2 as a bonus title.

==Gameplay== thumb|left|The player shooting down formations of enemiesThe objective of Gaplus is to score as many points as possible by defeating successive waves of enemies in levels called "Parsecs". Its core gameplay is very similar to Galaga: Enemies fly onto the screen in rows and join a formation near the top, then begin attacking the player's ship with kamikaze-like dives. The ship can move left and right, as well as vertically. Bonus lives are earned at certain score intervals, and can also be gained by collecting ship parts dropped by some enemies, as well as collecting Rally-X bonus flags from shooting stars. The player loses a life when struck by an enemy or one of their shots; the game ends when all lives are lost.