https://www.pcgamer.com/stardew-valley-hard-mode-mod-cranks-enemy-damage-up-200-percent/

Listen, I know the 'Souls-like' label needs to die—but RamenYum's Hard Mode Stardew Valley mod is so challenging I reckon it merits the comparison. 

After earning loads of dough, mastering combat and generally breezing through their first few playthroughs of the cutesy farming sim, RamenYum wanted more. Their Hard Mode mod increases monster damage by 200 percent. It ups monster health by 50 percent. It cuts crop profits by 50 percent. And it increases crafting recipe materials by 100 percent.