Age-old first-person shooter Doom has, at this point, a history of being run on all sorts of improbable hardware, and the latest achievement is running the game in a keycap.Yes, you read that right. You may be scratching your head at this point – a keycap, meaning the actual plastic key molds that make up the letters and characters on your keyboard – can’t do anything, right?Right, but in this case, it’s a keycap with a tiny little computer
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