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A common condition afflicting people who have played Ultrakill (a first-person shooter created by Arsi "Hakita" Patala), the Ultrakill demo, and/or consumed a piece of Ultrakill related media. Common symptoms include: a strong urge to purchase thigh-high socks, a buttplug, or cat ears; insanity; hysteria; uncontrollable laughter when something perceived by the afflicted to be related to Ultrakill is mentioned
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