Gaplus

Gaplus (ギャプラス) is a fixed shooter arcade game that was released by Namco in 1984. It is the third title in the series and was only known by its original name in Japan. When Midway Games released the game in the United States, its name was changed to Galaga 3, possibly to increase recognition among fans of the series and boost sales.

Unlike the first two games, the player's ship can now move vertically as well as horizontally (but only around the lower half of the screen). However, as in the original Galaga, the alien formation will fly on to the screen in parts until it is fully assembled and the player must destroy every alien in the formation in order to advance to the next stage, while avoiding physical contact with the aliens and their bullets.

Another aspect of the game that is identical to the original Galaga is that attacking enemies are worth more points than those in the formation. Occasionally, a King will appear yielding a "blaster head". Kill him while he is attacking with it in order to obtain it and its special power.

The bonus stages are also very different from the original Galaga - players had to "juggle" the enemies with their shots and keep them in the air in order to spell out secret words for bonus points. In order, these were "BONUS", "GAPLUS" (even in the US version), "DOUBLE", "TRIPLE", "GOOD!!", "LUCKY", "BYEBYE" and "EXTEND".