Space Shooter — Classic Retro Alien Invaders Arcade Game

Play Space Shooter free in your browser. Slide your ship, blast every wave of alien invaders and dodge their bombs. No install, no sign-up.

#arcade #retro #shooter #single-player

How to play

Drag anywhere on the screen to steer your ship, or move the mouse — it fires automatically. Destroy every invader and dodge the bombs they drop.

About Space Shooter — Classic Retro Alien Invaders Arcade Game

The fixed shooter — a lone ship at the bottom of the screen against a descending grid of aliens — is one of the founding shapes of the video game. The 1978 arcade machine that defined it sparked a worldwide craze and turned the shoot-'em-up into a genre. Decades later that simple, tense format still works because it asks one clear question every second: can you hit them before they reach you?

Space Shooter keeps the classic format intact. A formation of invaders marches left and right across the top of the screen, dropping a row closer every time it touches an edge. You slide your ship along the bottom and it fires automatically — your job is to aim by moving, thin the formation, and weave between the bombs raining down. A mystery UFO drifts across the top now and then for bonus points.

The famous twist is the tempo. The fewer invaders left, the faster the whole formation marches — the last few aliens are a frantic, darting chase. Clear a wave and the next one starts lower and meaner. You have three ships; the run ends when the last one is gone or the invaders reach your line. It is a pure score chase, and it gets its claws in fast.

Tips & strategy

  • Movement is your aim. The ship fires on its own, so think of steering as lining up shots — park under a column and let it auto-fire.
  • Clear the bottom rows first when bombs get heavy; fewer low aliens means fewer columns that can drop bombs on you.
  • Brace for the speed-up. Each alien you destroy makes the whole formation march faster — the final few are the hardest part of a wave.
  • When in doubt, dodge. A missed shot costs nothing, but a bomb costs a ship. Survival beats greed.
  • Keep moving. A still ship is an easy target; drift constantly so bombs aimed at your last position miss.
  • Hunt the UFO. The mystery ship is worth a big, random bonus — break off to snipe it when the screen is calm.
  • Watch which columns are loaded. Bombs come from the lowest alien in a column, so the tall columns above you are the real threat.
  • Catch every falling capsule you can. Yellow T (Triple) and orange R (Rapid) stack their fire-rate bonuses with your aim — the late wave goes from frantic to easy if you grab one near the end.
  • Save the red Mega-bomb for an emergency. Catching B instantly wipes every invader and every bomb on screen — invaluable when a wave is one second from breaching your line.
  • Treat the cyan Shield as a free re-do. The ring around your ship absorbs the next bomb hit instead of costing a life — once it's there, take the risky shot you couldn't take before.
  • Chain your kills for a score multiplier. Destroying invaders in quick succession builds a combo — every four kills bumps the ×multiplier higher (up to ×8), so a clean, fast sweep is worth far more than picking them off slowly. A long pause or taking a bomb hit breaks the chain, so keep the pressure on.

Frequently asked questions

How do you play Space Shooter?

Slide your finger or move the mouse to steer the ship along the bottom of the screen. It fires upward automatically. Destroy every invader in the wave while dodging the bombs they drop.

Do I need to press a fire button?

No. Your ship fires continuously on its own. The whole game is about positioning — move to aim your shots and to dodge incoming bombs.

Why do the aliens speed up?

The formation marches faster every time you destroy an invader. With only a few left it moves very quickly, which makes finishing a wave the tensest moment.

What is the UFO worth?

The UFO that crosses the top of the screen is a bonus target worth a random amount of extra points — well above an ordinary invader. Shoot it before it escapes.

How do I lose the game?

You start with three ships. You lose a ship when a bomb hits you, and the game ends when your last ship is gone — or if the invaders descend all the way to your line.

Is my best score saved?

Yes. Your highest score is stored in your browser and shown each game, so there is always a personal record to chase.

What are the coloured capsules that fall?

Power-ups. When you destroy an invader, it occasionally drops a capsule. Slide your ship under it to catch it. T (yellow) triples your shots for 8 seconds, R (orange) doubles your fire rate for 8 seconds, S (cyan) gives you a one-hit shield, and B (red) is a screen-clearing mega-bomb that instantly kills every invader and erases every bomb on screen.

How does the shield work?

When you catch a cyan Shield capsule a ring forms around your ship. The next bomb that would hit you breaks the shield instead of costing you a life. You can only carry one shield at a time — catch another after using it to renew the protection.

Can I pause the game?

Yes. Tap the pause button at the top-right of the playfield, or press P or Escape on desktop. Switching tabs also pauses automatically so a stray notification doesn't end your run.

How does the combo multiplier work?

Destroy invaders in quick succession to build a kill chain. Every four kills raises your score multiplier by one step, up to ×8, and all points you earn are multiplied by it. The chain breaks if you pause for too long between kills or take a bomb hit, so fast, aggressive sweeps score far higher than slow play. Your longest streak of the run is saved as your top streak.