Paku Paku uses an "undocumented" CGA mode which is essentially a text mode exploit that lets you have 16 color graphics with a very low resolution.
There are two cool old PC games that use this mode quite successfully, both developed by Macrocom. "Icon: Quest for the Ring" from 1984, and "The Seven Spirits of Ra" from 1987. #DOSGaming
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"Icon" even has a demo version that comes with a little demonstration of what this hidden CGA mode is capable of.
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@dosnostalgic The third picture almost reminds me of 8088 MPH