Just like game modes, this is another way to change how you play Minecraft. it sets how hard it is to play Minecraft. This option most affects survival mode.
In peaceful mode, you have no hunger, and hostile mobs don’t spawn, so experienced Minecraft players challenge themselves to beat the game in it.
In easy, all mobs spawn and starvation do little damage.
In normal mode, its easy but starvation and mobs are more deadly.
In hard mode, mobs are very deadly, and starvation is lethal. Spiders can spawn with buffs.