[malkia]

20 or so years ago, I've got a Hercules card for my dear old 386 machine - Good resolution at the time, but just two colors. There are couple of good games - Star Control II, Trolls, etc. that I've liked and what I did was first to disable the VGA detection, second was to find where the back buffer was in the game, and if there was none (Star Control II), point to my allocated.

Then on the fly convert 320x200x256 colors to monochrome - I mean it was very silly - just pick one of the bits - and with some experiments it worked (no, it's not the way to go in general - but I was able to play).

That was dog slow, but it felt like smoking something, getting high - it didn't matter that the game was unplayable (10fps or less) - it was the fact that it worked!!!