This is a low-spec modpack focusing primarily on mods that work cohesively together in order to give a sort of enhanced minecraft feeling, as well as featuring the origins mod for that extra challenge.
Why triple plus?
This modpack does not add any tech or magic mods, instead. It features mods such to add in new dimensions like the Atum, Undergarden, Everdawn and Everbright. It also overhauls the nether and end to be a more adventurous experience with such mods as the BetterEnd, BetterNether, Infernal Expansion, Endergetic Expansion and the Outer End.
It also adds in a variety of new creatures, such as from mods like Alex's mobs. Overall, it should provide a bunch of new stuff to do without losing that vanilla feel.
Sometimes, we all need a break from the humdrum of your factories and arcane halls. Returning to a more vanilla feeling minecraft can be that vacation you need, especially with how intricate and interesting the base mechanics can be and how often overlooked they are. Hopefully, if this is what you are looking for, this modpack would provide that.