Space Invaders

Shoot down the descending alien formation before it reaches your cannon.

Independent browser adaptation · Not an official release
Space Invaders
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A small mint defense cannon beneath a descending formation of chunky luminous alien shapes

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Five rows of aliens, one cannon, zero room for panic.

Keyboard & touch controls
← →Move the cannonSpace / TapFirePPause

How to play Space Invaders

  1. Slide the cannon along the floor

    Use the left and right arrow keys, or drag on mobile, to move your cannon across the bottom of the screen. You can keep moving while your shot is still in the air.

  2. Fire one laser at a time

    Press Space or tap to shoot. Only one of your shots can be on screen at once, so a miss means waiting for it to travel all the way up - Make every squeeze count.

  3. Duck behind the four shields

    The bunkers above you soak up alien bombs, but they crumble a little with every hit - Including your own shots from below. They are cover, not walls, and they will not last the wave.

  4. Pick off the mystery UFO

    Every so often a red saucer glides across the top of the screen. Hit it for a surprise bonus - But only when no alien bomb is falling toward the lane you are standing in.

  5. Never let them land

    If the formation reaches the bottom of the screen, the invasion succeeds and the run ends no matter how many lives you have left. Clear all 55 aliens and a fresh, faster wave takes their place.

This independent browser adaptation uses the original game’s established title. It is not an official publisher release or an original ROM. Its artwork, tuning and controls may differ from other games with similar rules. Guest personal bests stay in this browser. Signed-in players can also save scores and play history to their private dashboard; there is no global leaderboard. Read about controls and local storage.

Choose a related challenge

Read the formation as well as the nearest alien. Galaxian changes that pattern when enemies peel away and dive, making a safe firing lane temporary.

What Space Invaders is like to play

A small mint defense cannon beneath a descending formation of chunky luminous alien shapes
Space Invaders on Free Games. Five rows of aliens, one cannon, zero room for panic.

Space Invaders is the game that taught the world to duck. Five rows of eleven aliens shuffle across the screen, drop a step, and shuffle back - And every one you shoot makes the survivors march faster, until the last invader is a sprinting panic attack. You get one cannon, four crumbling shields, and a laser that fires a single shot at a time, so every miss costs real seconds. Up top, a mystery UFO drifts by with bonus points for anyone confident enough to chase it. Our version keeps the 1978 rhythm intact and adds the modern comforts: crisp keyboard and touch controls, a fresh UFO schedule on every restart, and a saved personal best to prove how long you held the line. It plays less like a shooter and more like a drumbeat you are trying to survive. Steady hands clear the wave. Greedy hands feed the aliens.

Space Invaders at a glance

Key facts about the Space Invaders browser edition
GenreArcade Shooting Games
ChallengeRhythm game in disguise
PaceThe fewer aliens left, the faster they march
Original era1978 (Taito)
PlayersSingle player
Controls← →, Space / Tap
CostFree, with no account and no download

Where Space Invaders came from

Space Invaders was built almost single-handedly by Tomohiro Nishikado at Taito in 1978 - He spent over a year designing the game, the art, and much of the hardware himself, drawing inspiration from Atari's Breakout and the alien hordes of The War of the Worlds. Its most famous feature was an accident: the Intel 8080-based board could redraw fewer aliens more quickly, so the formation sped up as it thinned. Nishikado recognized the accidental tension as brilliant game design and left it in.

The result was arcade gaming's first true blockbuster. Japan filled cafes and bowling alleys with cabinets - Legend even claims the game caused a national 100-yen coin shortage, a story too good to fully verify and too famous to leave out. Midway licensed it for the United States, where it launched the golden age of arcades, and the 1980 Atari 2600 port became the first licensed arcade conversion and a system-selling smash. Chasing a Space Invaders high score is arguably where competitive gaming began.

Nearly five decades later, the game's drumbeat still works. The version you are playing recreates the 8080-era rhythm in your browser - No quarters, no cabinet, same slow-building dread - And keeps your best score so the high-score chase Nishikado started never has to stop.

Ways people play Space Invaders

Space Invaders Part II (1979)
Taito's fast sequel added color, flashing bonus UFOs, invaders that split when shot, and the first-ever intermission scenes between waves.
The Galaxian lineage
Namco's 1979 answer let aliens break formation and dive-bomb in color; its 1981 sequel Galaga added the famous tractor beam and dual-ship rescue.
Cocktail-table rules
Sit-down two-player cabinets, standard in Japanese cafes, alternated turns and flipped the whole screen so player two could face the invasion from the opposite seat.
Space Invaders Extreme (2008)
Taito's 30th-anniversary reboot turned the march into a rhythm game, with pulsing music, score chains, and boss saucers on handheld consoles.

Space Invaders questions and answers

Why do the aliens speed up as I shoot them?

It began as a hardware accident. Designer Tomohiro Nishikado's 1978 board drew fewer aliens faster, so the march naturally accelerated as the swarm shrank - And he liked it so much he kept it as the difficulty curve.

How many aliens are in each wave?

Fifty-five: five rows of eleven, just like the original cabinet. Clear them all and the next wave arrives tougher than the last.

What is the UFO worth?

The mystery saucer pays a random bonus that beats any single alien in the formation. In the 1978 arcade version it ranged from 50 to 300 points, and our version keeps that spirit of the lucky-dip jackpot.

Can my shields be destroyed?

Yes. Alien bombs chew them from above, your own lasers chip them from below, and descending invaders erase any shield they touch. Expect to end most waves in open air.

What happens if the invaders reach the bottom?

The game ends instantly, even if you have lives in reserve. A landing is a loss by definition - The whole point is that they never touch down.

How does Space Invaders scoring work?

Higher rows pay more: the top-row aliens are worth the most and the bottom row the least, with the UFO paying a bonus on top. Surviving deep waves is where big totals really come from.

Does the invasion play out the same every game?

Not quite. The formation always marches faster as you thin it, but the UFO drifts by on a fresh schedule each game - So the rhythm is learnable and the bonus is not.

Can I play Space Invaders on my phone?

Absolutely. Drag anywhere on the screen to slide the cannon and tap to fire. The one-shot-at-a-time rule works exactly like it does on keyboard.

If you like Space Invaders, try these next

Four games from the same shelf, each with its own pace. The one-line summaries are how their own pages describe them.

Games related to Space Invaders, what each is like, its pace, and a link to play it
GameWhat it is likePacePlay
CentipedeA hundred legs, a mushroom field, and you at the bottom.Splitting segments multiply the chaosPlay
CombatOne arena, ricochet shells, last tank standing.Duels start slow, end suddenPlay
GalaxianThey don't just march - They dive.Dives come faster every wavePlay
River RaidFly the river, shoot the bridges, watch the fuel.The river narrows when you least want it toPlay

Arcade shooting games: make room for the next shot.

Fixed cannons, drifting ships and defensive explosions need different escape and aiming plans.

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