Its like the normal 1.6.4 version but more updated and a few new mods as well as alot of old reconized mods just dont have Galaxtic Craft yet working to get that worked and set
Installing a modpack using the Technic Launcher is easy. If you don't already have the launcher downloaded, visit our download page to get the latest version.
Type in the modpack name (Traincraft With A Twist 2.0) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select Traincraft With A Twist 2.0 from the list on the left. The launcher will handle everything else!