Carl's difficulty mod
Carls made a mod that adds more difficulty to the game. Feel free to share your thoughts on the mods, experiences, or other similiar or complementary mods. https://youtu.be/Km2jJLVfLtY
Forum Discussion
I use one by bienchen that is similiar to that Simularity one that you mention, @FatTribble23. I recall checking out Simularity's and Lotharihoe's mods for it, and sticking with Bienchen's because hers covered the same aspects and she's generally quicker about updating if and when needed. Hers touches more tuning files as well, though.
