this mods add many features such as
turning players into catgirls
breaking your leg form a six block fall
a custom Rv with a customizable and shared interior
these can affect gameplay in many ways such as
making it harder to move
or reducing maxium HP or distance reach
these features allow you to build factorys and troll you firends by poisoning them blinding them and many more and adds injurys like broken leg and bleeding and adds gamerules to change the game such as funnest mode which makes the mobs buffed