Gaplus/Walkthrough

Get up to 6x firepower
A concept in this game that improves on one of the most interesting features of Galaga is the red blaster head occasionally yielded by the Kings. By killing the King when he is attacking with it, you can get up to 6x firepower by capturing as many Zakos, Lutes, Caps and Ados as you can in the resulting tractor beam - thereby forcing them to fight their alien comrades alongside you. The entire sequence goes like this:
 * You survive the entrance section. (Note: If you are killed before all the aliens have taken their place in the formation, the stage will start over from the beginning.)
 * When the King appears, he will have the red blaster head in tow. Wait until he starts attacking before you shoot him.
 * After you have killed the King, the gameplay will freeze for a few seconds as the blaster head falls down and lands on the top of your ship.
 * A multicoloured energy beam starts emanating from the top of the blaster head. Try to capture as many aliens as you can before it deactivates and the blaster head disappears.
 * If any aliens are caught in the beam, they will line up on either side of your ship after the beam has deactivated and fire at the same time as you. They are still vulnerable to their comrades' shots, however. (Note: Although any aliens working alongside your ship are normally destroyed individually when hit, if your ship itself takes a hit they will all die instantly and take you with them.'')

Challenging Stages
A Challenging Stage occurs on the third stage and every fourth stage thereafter. They are very different from those of the original Galaga. When the enemies appear, you must "juggle" them with your shots in order to slowly spell a secret word out for extra bonus points. The secret words and the maximum point values you can get for spelling them out are as follows:
 * Stage 3: BONUS, 37800 points
 * Stage 7: GAPLUS, 65200 points
 * Stage 11: DOUBLE, 50600 points
 * Stage 15: TRIPLE, 78300 points
 * Stage 19: GOOD!! 95500 points
 * Stage 23: BYEBYE, 25000 points
 * Stage 27: EXTEND, 25000 points

How to get the Hypership (the bottom ship on the title screen)
At the start of the first stage, the player must move the ship up the screen until it stops and let it just sit there without shooting anything until all the aliens have taken their place in the formation. After the shooting star appears, the player must shoot the second Zako from the left in the bottom row of the formation without hitting any other enemies. A Rally-X Special Flag will then appear, and when the King flies down, the player must crash into him (but not his blaster head) and your regular ship will turn into a Hypership that can fire three shots at a time instead of just two.