Galaga

Galaga is the 1981 Namco arcade game that perfected the formula Space Invaders pioneered — same vertical-shooter concept, but with dive-bombing enemies, capture-and-rescue mechanics, and Challenging Stages that became iconic. Designed by Shigeru Yokoyama as a direct sequel to Galaxian (1979), Galaga arguably surpassed both predecessors and is often cited as one of the greatest arcade games ever made.

How to play

• Left / Right arrows or A / D — move ship horizontally. On a phone, touch and drag on the game to steer.
• Space, click or tap — fire. Hold Space (or keep your finger down) for steady fire; up to 4 of your shots can be on screen at once.
• P — pause.
• 40 aliens fly in and settle into a 5-row formation that sways side to side at the top: a row of bosses (150 points), a row of red aliens (80) and three rows of green aliens (50).
• From the formation, individual aliens periodically detach and dive toward your ship, firing aimed shots.
• A diver that reaches the bottom of the screen flies back in to rejoin the formation. Shooting an alien mid-dive scores double points.
• Clear all aliens to advance to the next stage. Later stages send divers more often, and stages continue until you run out of lives.
• 3 lives. Getting shot or rammed by a diver costs a life. Your high score is saved in your browser.

The arcade original’s capture-and-rescue mechanic

Our browser version keeps things simple: there are no tractor beams, Challenging Stages or dual fighter, so it plays closer to Galaxian-style shooting. In the 1981 arcade game, though, the signature mechanic is this: the Boss Galaga at the top can fire a tractor beam downward. If it catches your ship while you’re alive, your ship is CAPTURED and pulled into the formation. You lose a life and respawn — but if you destroy that boss while it’s holding your captured ship, the captured ship JOINS your active ship (dual fighter), doubling your firepower.

• Step 1: intentionally get caught by the tractor beam.
• Step 2: respawn with new life.
• Step 3: when the boss with your captured ship dives again, shoot the boss before the captured ship is destroyed.
• Reward: you regain your captured ship, attached to your new one. Twin-fighter mode = double firepower (but also wider hitbox).
• Risk: if you shoot the captured ship by mistake, it’s gone forever.

Beginner strategy

• Stay mobile. Standing still is death. Diving aliens fire aimed shots at where you are, so keep shifting.
• Side-strafing. Dive-bombers approach in arcs. Move opposite to their trajectory.
• Shoot when stable. Your shots fly straight up, so line up under a target before firing.
• Don’t chase diving aliens. They’ll return to formation if you miss. Position to intercept their next approach.
• Aim for the bosses. In our version the top-row bosses go down in one hit and are worth 150 points, or 300 if you catch one mid-dive.

Intermediate strategy

• Hunt divers for double points. An alien shot mid-dive scores twice its formation value, so a diving boss is worth 300.
• Watch the dive rate. Divers leave the formation more often as the stage number climbs, so later stages need more movement and less greed.
• The corner zones. Sit near a corner — incoming dives are more predictable from one side than two.
• Arcade Challenging Stages. In the original, the first bonus round is stage 3 and then every 4th stage; hitting all 40 aliens earns a 10,000-point perfect bonus.
• Arcade capture risk-reward. In the original, getting captured deliberately and rescuing the ship for the dual fighter is a classic high-score tactic.

Advanced strategy: arcade pattern play

• Pattern shooting. In the arcade original, enemy entry patterns are fixed for each stage, so expert players learn where to sit and when to fire. Our version randomises dives and enemy fire, so react rather than memorise.
• The dual fighter. In the arcade game, twin fighters fire two shots at once, which makes clearing a Challenging Stage far easier.
• Boss escorts. In the arcade game, shooting a diving Boss Galaga along with its escorts pays a large bonus.
• Marathon runs. Arcade record runs go on for hours and reach scores in the millions.

Galaga’s history

• 1979 — Galaxian: Namco’s predecessor introduces dive-bombing enemies to the genre.
• 1981 — Galaga: Shigeru Yokoyama’s improved sequel. Adds capture mechanic, Challenging Stages, dual fighter.
• 1981 — Western release: Midway distributes Galaga in North American arcades. Becomes an arcade staple.
• 1984 — Gaplus: sequel that lets the ship move up the screen and adds power-ups.
• 2000 — Galaga: Destination Earth: 3D-rendered PlayStation and PC version.
• 2008 — Galaga Legions: Xbox Live Arcade modernization.
• Today — Galaga remains an arcade icon. It is a regular in Namco Museum collections.

Why Galaga is loved

• Risk/reward depth. The arcade game’s capture-rescue mechanic adds layers Space Invaders lacked.
• Challenging Stages. Bonus rounds with no fire are pure shooting fun — palate-cleansers between intense waves.
• Pattern-based scoring. Encourages mastery — expert players can score wildly more than beginners.
• Visual polish. Detailed alien sprites with personality, smooth dive animations.
• Sound. The arcade original’s start-up tune and sound effects are instantly recognizable.

Common mistakes

• Standing still. Galaga’s enemies AIM at you. Move continuously.
• Trying to shoot bullets. Alien bullets pass through your fire. Dodge, don’t shoot.
• Letting divers ram you. A diving alien that hits your ship costs a life just like a bullet.
• Over-firing at the formation. Only 4 of your shots can be on screen at once, so wild spraying can leave you empty when a diver lines up.
• Camping in the centre. Centre position is the most-targeted by dive-bombers. Edge positions are safer.

FAQ

• Q: What’s the difference between Galaxian and Galaga? A: The arcade Galaga (sequel) adds: 2 bullets on screen, capture-rescue, Challenging Stages, dual fighter, and refined enemy patterns. Our browser version focuses on the core formation-and-dive shooting.
• Q: How do I get the dual fighter? A: In the arcade original, let your ship get captured by a boss’s tractor beam, then destroy the boss holding it and the captured ship rejoins yours as a twin. Our browser version doesn’t include capture or the dual fighter.
• Q: How many waves does Galaga have? A: Our version is endless: stages keep coming until you lose all 3 lives.
• Q: What’s PERFECT in a Challenging Stage? A: In the arcade original, hitting all 40 enemies in the bonus stage, worth 10,000 points. Our version has no Challenging Stages.

For other arcade shooters, try Space Invaders, Asteroids, Centipede, or Pacman.