In the mid-1990s, id Software unleashed Doom and a year later its sequel Doom 2 into the wild, creating something of a shockwave throughout the gaming world, with the first-person shooters going on to influence a whole genre. With the original FPS pioneering early online multiplayer gaming, the nearly 30-year-old title is still being played to this day, with John Romero himself still making content for the classics.
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