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There have been various attempts over the years to "improve" the Doom palette. While these attempts had various goals, and succeeded to various degrees, one question remains: did the authors get paid billions of dollars for recoloring pictures? No? Then their attempts were objectively inferior to one group of people who did!
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The hope is strong that certain developers leverage visual enhancement technologies discovered by mobile developers, the so called 'filters', as one of the numerous means of rejuvenating modern gamer interests.

Source: doomworld.com