"KeeperFX is an open-source remake and fan expansion of Dungeon Keeper" https://keeperfx.net/
I now realise I hadn't turned the resolution up so I was playing this at a crisp 480p lol! I had to resize it so it fits the screen. I've now changed the settings in the launcher and it looks about the same, so I don't think it makes too much difference, just makes it easier for me not having to resize it next time. Also I didn't know why there was no music, turns out you need to copy the ogg files from the GOG install files!
At this time, Crypt Sludge has 97 views for Dungeon Keeper spread across 2 videos. His channel uploaded an hours worth of Dungeon Keeper videos, or 1.09% of the total watchable video on Crypt Sludge's YouTube channel.