The objective of the game is to shoot down waves of alien enemies that move across the screen in a coordinated manner. The aliens gradually move faster and become more difficult to hit as the player progresses through the game.
The player has a limited number of lives and can be destroyed by the aliens' projectiles or by colliding with an alien. The player can earn points by shooting down the aliens and must reach a certain number of points to advance to the next level.
The game's graphics and sound effects were simple but groundbreaking for their time and contributed to the game's immense popularity. Space Invaders has since become a cultural icon and has been ported to numerous platforms, including modern consoles and mobile devices.
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