The retro-mated Witcher screen actually looks very good, it could have been in a real game in the early 90's. It reminds me of the close-ups in many LucasArts games, with delicately chosen colors in a finely drawn pixel art composition.
The Dreamfall retro-mate doesn't look too good or authentic, but sure looks funny like everything else.
Anyway, that was fun! Makes me want to play some 90's games.
Well those are from the second half of the 90's, so obviously they use a different generation of hardware and a different technology stack.
The Secret of Monkey Island, Prince of Persia II: The Shadow & The Flame, and Day of the Tentacle are all from the very early 90's, 1993 the latest. No polygons there. And the point of those screenshots was to illustrate the context in which that "retromated" Witcher 2 made sense, since it could actually BE one of those games.
I never hard IRQ conflicts in MS-DOS by the way. My first sound card was a Sound Blaster Pro so maybe they were solved by then