(Undated) -- It's the 40th anniversary of one of the most iconic video games of all time.
Space Invaders was released in Japan on this date in 1978.
It challenged players to control a laser cannon at the bottom of the screen while a horde of aliens slowly descended from the top of the screen.
People in Japan and America couldn't get enough of the game, sinking quarter after quarter into Space Invaders machines.
It's estimated to have made nearly half a billion dollars by 1982.
It was induced in the World Video Game Hall of Fame in 2016.
Video: Youtube/IB Times UK