O.C.T.A.

This modpack is made by octadragon to play with friends but you can download it too.

The modpack contains Adventure, Tech, Magic, and some other exciting mods to satisfy most (if not all) play styles.

As for adventure we have Biomes O Plenty and Oh The Biomes You'll Go, those are the most popular biome generation mods that add a lot of gorgeous biomes to minecraft, autumnity is another mod that adds some beautiful biomes and a couple of creatures.
There are dungeons mods too that will grant you great loot so be prepared before you enter the dungeons. 
Villages will have bounty boards that'll have a bunch of quests to be fulfilled in exchange for emeralds and other resources and gear.

If you're a tech player you should not worry as the modpack contains Thermal Series, Mekanism, Create, Immersive Engineering, XNet, RFtools, and more.

And for the mages out there we got Ars Nouveau, Eidolon, Blood Magic, Psi, and more will be added as the pack updates.

I'll be adding quests to the modpack soon so stay tuned.

Note that the modpack is still in beta so expect frequent updates and changes.

I hope you'll enjoy the modpack.