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By meeting certain conditions in other games, you can unlock more games.
Unlockable How to Unlock Galaga '88 Get a high-score of 40,000 or more in Galaga Pac-Mania Get high-scores of 15,000+ in Pac-Man and 20,000+ in Ms. Pac-Man
Contributed By: KeyBlade999.
In service mode, hold down the fire button and press the stick up five times, right six times, down once, and left four times to make a hidden message appear.
Dig Dug Cheats
Make every enemy dissapear!
This glitch will make all enemies dissapear in the current level, but the level will not end. This let's you to get as many points as you want from eating all the dirt! 1) Get the game down to two Pookas. If you only leave one, it will escape thus ending the round. 2) This works best in horizontal tunnels under the rocks. 3) Get a Pooka to follow you, inflate as necessary to delay him a little. 4) Right when you are next to the rock, inflate the Pooka once to just delay him. When he moves at your character again, move under the rock. 5) Quickly turn around and start pumping the Pooka up. Using the delay of the rock dropping, you should be able to cause the Pooka to burst at the same time the rock drops on him. 6) If you are successful, then the other Pooka will disappear and you can amuse yourself digging out tunnels all day long in the dirt. NOTE: To return the game back to normal, drop another rock and you will go into the next round.
Contributed By: Apalapan.
In service mode, keep down the fire button and press Up six times, Right three times, Down four times, and Left eight times to see a hidden message
Stop Enemies from Firing
On most revisions of Galaga, there's a trick that stops enemies from firing at your ship. In Stage 1, kill all aliens except the two bees in the bottom-left corner. Allow the bees to dive down and shoot at you, while dodging their shots. After around 15 minutes or so, the bees will continue to drop down, but they won't fire. Let them drop down another 5 or 6 times, then kill them. After all this, enemies will not shoot at you for the rest of the game.
Contributed By: Colin.
Wait until one of the top ships(the green ones that take two shots to kill) comes down and fires off a tractor beam(the beam that can capture your ship). Let it capture your ship. Now, wait until it swoops down again with your ship behind it. Simply kill the head ship(the green one), and it will lose your ship. Your ship will then lock on to the side of your current ship, giving you two ships to play with at the same time! Now, be careful. Not only will both ships be firing at you after your ship gets captured, but if you accidently shoot your captured ship, you'll destroy it. Also note, this will cost you one life, but will definately make the Challenging Stages, and perhaps the game itself, a little easier to play.
Note: This works in all non-bootleg/hack versions of Galaga, as well as most of the sequels and Arranged Mode in Namco Classic Collection Vol. 1.
Contributed By: JosephLithius.
Galaga '88 Cheats
During the ''Galactic Dancing'' bonus round, don't do anything. You will receive a bonus between 10.000-25.000 points.
Contributed By: Atombender.
Enter service mode, then quickly turn it off and on once so that an alignment grid appears on the screen, hold down both start buttons and toggle service mode on and off quickly again so that grid remains on the screen. Next move the stick up, left, down, and right four times each to make a hidden message appear onscreen.
Pac Man's parking space
At the beginning of every level/life, Pac-Man is just underneath a T-shape. The right-hand corner of that T is a parking space. If the ghosts aren't chasing you closely, you can pull into that space and the ghost will not find you. You can leave it sit for hours and they won't find you. It gives you a chance to grab a sandwich, take a bathroom break, etc.
Contributed By: Smaggy.
Press the Start Button while holding the Jump Button to access a hidden level select.
Code Effect Start button while holding Jump Button Level Select
In service mode, hold down the fire button and move the joystick up twice, down seven times, right once, and left six times to display a hidden message.
There's a hidden developer message in the game. When you start the game, go to left side of the screen and drop bombs repeatedly, you will see a message appear and gain 10 points.
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