Loobinex: 1) Install Dungeon Keeper gog 
 2) Download KeeperFX here: 
https://keeperklan.com/downloads.php?do=file&id=137  3) Extract KeeperFX to a folder 
 4) Run the launcher, and click install. Point it towards your installed folder. Done.  
 There's the FX wiki here: 
https://github.com/dkfans/keeperfx/wiki  And a GOG topic here:  
https://www.gog.com/forum/dungeon_keeper_series/keeperfx_hires_dk1_latest_builds_and_install_instructions/page1  Troubleshooting here: 
https://github.com/dkfans/keeperfx/wiki/Troubleshooting   As for differences, yeah, there's too much stuff to list. See 
herefor the full changelog. It's 1913 changes, and about 
250 more if you update to the 
latest alpha.  
 But, in short, KeeperFX has been made to run natively on modern machines, plays in higher resolutions, fixes many of the bugs that plagued the original game, and comes included with user-mad campaigns.