Sidera is a mod pack which is intended to be played multiplayer, some of the mods you can dig into are: create, alex mobs, alex caves, twilight forest, Deeper and darker and sniftfer plus.
You will adventure through the world completing constellations (quest trees) to return the world to balance.
Find the rare cave biomes, automate your resources, tame new creatures or fight the new bosses there is so much content to play through.
I hope you enjoy your time in Sidera!

