A moderately sized pack based around enhancing the vanilla experience. As with all modpacks, playing with friends is recommended.
Exploration is greatly expanded in this pack through various structure mods, caves are overhauled completely and are a whole load of fun to explore, world generation is stunning through Oh The Biomes You'll Go and Terraforged, most of the Abnormals mods are included (as they are the single greatest thing another human being has constructed) and Create allows for very advanced automation while not requiring an undergraduate's degree worth in tutorials to understand.
At least 4 GB of RAM are recommended, along with a half decent CPU.
Enjoy!