mods included: nuclearcraft, galacticraft, justenoughresources(JER), netherores, justenoughitems (JEI) (includes the 3 files needed for galacticraft btw), this upgrades the minecraft experience, but not too much, just some simple changes, if you want more to do but don't want to play a entirely different game, y'know? galacticraft allows you to do many things, build spaceships and suits to go to planets astroids and even spacestations! or make a automatic mining drone to do some mining for you! nuclearcraft allows you to do well, nuclear things, build a nuclear reactor! and some more.
(built to run on 1.12.2) (link to the galacticraft wiki here: https://wiki.micdoodle8.com/wiki/Galacticraft )