A very cool mod! I recommend it! Some creatures appear as independent units, but the vast majority are a worthy replacement for the standard ones (for example, awesome destroyers replace devils, and wolves become brutal dire wolves)! It's a pity that there are no ghouls replacing zombies. A plus is that this mod isn't just one file with a bunch of creatures packed inside, but a zip file from which you can selectively extract the creatures. I'm also attaching a photo of 9 creatures (ancient behemoth, destroyer, spawn of evil, orc chieftain, orc, gnoll, kappa, dire wolf, and puppeteer):

