The role of play - Videogames with a political message

The bleeping sound tells you you're about to play a variation on one of the classics - Space Invaders. But when the graphics appear, it isn't green aliens advancing at you, but white blocks with dollar signs on them. And you shoot at them with... well, the disembodied head of a smiling George W. Bush. Pump enough bullets out of W's cranium and you clear the screen to leave the message: "You've saved the country from John Kerry's tax plans."

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