Play the classic Space Invaders arcade game online for free! Defend Earth from waves of alien invaders in this retro space battle. Control your laser cannon at the bottom of the screen, moving left and right to dodge enemy fire while shooting at descending alien formations. Features 5 rows of 11 aliens with distinct colors and point values (10-50 points per alien), increasing difficulty across levels, a UFO bonus target worth 100 points, progressive alien speed as you clear each wave, keyboard controls (arrow keys to move, Space to shoot, P to pause), glowing retro-style graphics with a starfield background, sound effects for shooting, explosions, and level-ups, and a local high score leaderboard. How many waves can you survive?