Laser Cannon
The player's cannon, which moves horizontally along the bottom of the screen and fires one shot at a time.
Documented for this version
Which controls does this version use?
Control notes
DOS control assignments vary by release; no version-specific mapping is provided.
How it plays
How does Space Invaders play?
The player views the battlefield from the side and controls a cannon along the bottom of a single-screen playfield. Rows of aliens move from side to side, descend when they reach an edge, and fire toward the cannon. The objective is to destroy every alien before the formation reaches the ground or the player loses all lives.
Shields can block some shots but gradually break apart. After one formation is cleared, another begins, normally with greater pressure as fewer aliens remain. A flying saucer may cross the top of the screen and offer a bonus target.
Plan your run
What is the best way to play Space Invaders?
Fire deliberately rather than holding the button continuously if the version limits shots on screen. Clear one side of the formation to create space, then keep moving so enemy fire is less likely to line up with the cannon.
Use shields as temporary cover, not permanent protection. Prioritize aliens near the bottom because their advance is the immediate threat, and take a saucer shot only when it does not leave the cannon exposed.
Meet the cast
Who are the key characters?
Invader
The descending alien enemies arranged in formations. Different rows award different point values.
UFO
A flying saucer that crosses the top of the screen and can award a variable bonus when shot.
Shield
Defensive barriers that absorb shots from either side but are gradually destroyed.
Before you begin
What should you know before playing?
- 1
Stay mobile while watching the lowest surviving aliens.
- 2
Use shields early, before the formation becomes fast.
- 3
Target the lowest rows first when the invasion accelerates.
Community discussion
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