If I recall correctly, the art is done with a form of early vector drawing so that they can use one set of assets on all platforms. They're designed to 16 colors but get downsampled for 4-color CGA mode or monochrome mode.

> Given C64 is a roughly equivalently specced machine, there is no reason in principle why they couldn't have ported AGI to C64 as well – it just, for whatever reason, never happened.

Agreed about the issues not being (completely) technical. <https://np.reddit.com/r/c64/comments/1r8hgwk/kings_quest_i/o...>