I got that to run back in the day when I had a 2MB memory expansion, I presume I got that after I put the hard drive in, but I doubt I was running much else. It would run in Productivity VGA mode (640x480), it looked great, but it slowed down greatly, even on the smaller maps that having 4MB of RAM total would allow you.
Shame that no-one ever hacked the codebase to optimise the graphics drawing routines and add extra graphics modes. It was a very lazy port - I believe it actually converted the bitmap graphics from chunky mode to planar upon drawing them.
Dropping the palette to 128 colours would have sped up the system, and having a half-resolution version of the graphics (at least vertically, if not in both axes) and pre-storing them in planar mode could have sped the game up a lot. Productivity 256 colour mode was slow slow slow.
