In designing DOOM Eternal?s difficulty settings, id Software went to a surprising source for inspiration?Mario Kart. Thanks to the kart racer, the DOOM studio uncovered what it hopes is a solid recipe for an intense experience across every difficulty level. In turn, those who play on the easiest difficulty will experience an intensity not too dissimilar from players who prefer more punishing levels, such as Nightmare.
Co-Director Hugo Martin told USgamer explained that in Mario Kart only speed changes across skill settings. For example, 50cc is slower than 150cc; however, players must bring the same level of skill to each in order to succeed. Martin elaborated,

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