Take an Elite-style game like Flatspace II. Set it in a cartoony universe where Zombies and Ninjas are waging an interstellar war. Tool around in a "starship" that's more like a Buick with a stardrive and lasers. Wage space battles against, among other things, space-going galleons and pterodactyls, and trade goods like cheese, paper, and kittens--no "industrial goods" or other boring stuff here. All to a loud, frenetic neopunk score--that's Ninjastarmageddon!.
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