Early '90s animation tools were so primitive that Doom's lead artist says he pretty much did the whole thing with 'the undo key'

Human ingenuity is a powerful—sometimes terrifying—thing. Throughout history, no matter how basic the tools available to us, we have always found a way to build the weird obsessions that appear in our minds. You know, like Stonehenge, or the Pyramids, or Doom (1993)...
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