This modpack contains all the classic mods from the 1.2.5 era of modded minecraft, like ICĀ², Buildcraft and Thaumcraft, with as many of the excellent addons made for these mods as possible. Everything has been tweaked to remove as many problems and kinks as possible in order to deliver the smoothest modded minecraft 1.2.5 experience. Go nuts and build the biggest and coolest contraptions possible!