Back in the day, Space Invaders, by Japanese company Taito, was one of the coolest games to come along as it was one of the first (if not the first) electronic game ever to offer open-ended gameplay. What that means is that it's impossible to 'beat' the game, the aliens just keep coming at you relentlessly. The motivation came in the form of entering your initials on the high scores board listed on the screen between games. That was 25 years ago. This year, Taito plans to sell 10,000 brand-new stand-alone Space Invaders game machines to mark it's 25th anniversary. [Source: CNN]. And so, here is Space Invaders.