Space Invaders History and Survival Strategy
Aliens march downward in tight rows. You command a lone cannon at the bottom of the screen. You fire upward. They advance. One alien reaches your line and the game ends. Space Invaders built the arcade industry on this simple tension. Most players survive less than two minutes. This guide covers the history behind the game and the strategy that keeps you alive longer. You will learn how alien speed works, how to use bunkers, and how to control the pace of every wave. Play Space Invaders and test each tactic as you read.
The History of Space Invaders
Tomohiro Nishikado created Space Invaders at Taito in 1978. He programmed the game on a microcomputer he built himself. He designed the hardware, wrote the code, and drew every sprite.
Space Invaders was the first arcade game to track high scores. Before it, arcade games simply ended. The high score table gave players a reason to return and a benchmark to beat.
The legend says Space Invaders caused a coin shortage in Japan. The story is partially true. The game increased demand for 100-yen coins so dramatically that the mint ramped up production. It sold over 360,000 cabinets in Japan.
One accidental feature defined the experience. The aliens speed up as you kill more of them. This happened because the hardware rendered fewer sprites as the count dropped, freeing processing power and speeding up the game loop. Nishikado kept it. That escalating tension became the heartbeat of every wave.
How to Play Space Invaders
You move a cannon left and right along the bottom of the screen. Aliens in rows march side to side and drop one row each time they reach a screen edge. You fire bullets upward to destroy them. Aliens fire back. Bullets can destroy the bunkers between you and the invaders.
You start with three lives. A direct hit from an alien bomb costs one life. An alien reaching your baseline ends the game instantly. Clear every alien to advance. Each wave starts faster than the last.
5 Strategy Tips for Survival
1. Shoot From the Edges Inward
Aliens move as a block. When you clear a column, the block shrinks and the remaining aliens speed up. If you clear columns from the center outward, the block stays wide and reaches the screen edges quickly. That makes them drop rows faster. Instead, pick off the leftmost or rightmost column first. A narrower block takes longer to cross the screen.
2. Leave One or Two Aliens to Delay the Speed-Up
The fewer aliens on screen, the faster they move. The last alien zooms across the screen at alarming speed. When you clear a wave down to the final two or three aliens, slow down. Pick them off one at a time with careful aim. Rushing your shots wastes bullets and leaves you exposed.
3. Use Bunkers Strategically
Bunkers shield you from alien bombs. They also degrade with every hit, from your bullets and from theirs. Do not shoot through your own bunker. Stand behind a bunker when aliens fire heavily. Move away when you need to shoot. Preserve at least one bunker for the late stage of each wave.
4. Create Safe Lanes by Clearing Columns
Pick a column and clear it completely. That vertical lane becomes a safe corridor. You can fire upward without hitting a bunker or waiting for aliens to shift. Two cleared lanes on opposite sides give you flexibility to dodge bombs.
5. Time Your Shots
Your cannon fires one bullet at a time in the original game. Every shot must connect or you wait for it to leave the screen. Aim carefully. Watch the alien patterns. Fire when an alien pauses at the edge of a row, since it reverses direction and stays in place for a split second. That moment is your window.
Gameplay Examples
Picture the start of a wave. Five rows of aliens fill the top of the screen. You slide your cannon to the far left. You fire straight up and destroy the bottom alien in the leftmost column. You fire again. The second alien falls. The column is gone. The block narrows. It takes longer to cross the screen now.
The aliens speed up as their numbers shrink. You drop to 10 aliens. You retreat behind a bunker. Alien bombs slam into it. You fire upward through a cleared lane. Two more aliens explode. Five remain. You slow your fire. You pick them off one by one. The wave clears.
Variations of Space Invaders
The original game featured one alien type per row, with top rows worth more points. Sequels and clones expanded the formula with boss aliens and power-up drops.
Browser versions often include rapid fire and progressive difficulty curves. Each variation shifts your priorities. Try Asteroids and Centipede for more classic shooting, or Frogger for a different survival challenge.
Why People Love Space Invaders
Space Invaders created the tension loop that arcade games still use today. The aliens approach. You fight back. The pressure mounts. You either clear the wave or get overwhelmed.
The game rewards improvement visibly. Your first run lasts 90 seconds. Your tenth lasts three minutes. The high score table gives you a number to chase.
Play Space Invaders for Free
You do not need an arcade cabinet. Space Invaders runs in any browser with no downloads. Load the page and start defending your line. Explore more retro titles in the classic arcade category.
FAQ
Why do the aliens speed up in Space Invaders?
The original 1978 hardware rendered each alien as a separate sprite. Fewer aliens meant less processing work, which made the game loop run faster. Nishikado kept this as a feature because it created escalating tension.
Did Space Invaders really cause a coin shortage in Japan?
Partially. The game increased demand for 100-yen coins so much that the Japanese mint increased production. Reports of a full shortage are exaggerated, but the surge in coin demand was real.
What is the highest score possible in Space Invaders?
The original game caps at 9999 points on the display. Modern versions and browser remakes often track higher scores. Scoring depends on which aliens you hit, since top-row aliens are worth more.
How many lives do you get in Space Invaders?
The default is three lives. Some versions and difficulty settings adjust this number. You lose a life when an alien bomb hits your cannon or when an alien reaches your baseline.
Who created Space Invaders?
Tomohiro Nishikado designed and programmed it at Taito in 1978. He built the hardware, wrote the code, and created all the sprite art himself.
Conclusion
Space Invaders rewards patience and pattern recognition. Clear columns from the edges inward. Preserve your bunkers. Time your shots. Slow down when only a few aliens remain. Understand the speed-up mechanic and you will survive longer every run. Load Space Invaders and start defending your line today.
References
- Space Invaders history and Tomohiro Nishikado, Wikipedia: https://en.wikipedia.org/wiki/Space_Invaders
- Taito company history and arcade legacy, Wikipedia: https://en.wikipedia.org/wiki/Taito
