We've previously covered Quake mega-mod Arcane Dimensions, which has become a cornerstone of modern Quake mapping thanks to its slew of new gameplay features, enemy types and weapons going a long way to refresh the formula of Id's cyber-gothic classic without diluting its breakneck pacing and drum-tight combat loops.Xmas Jam: 1024^3 is the latest group project to come from the quietly industrious func_msgboard mapping community. Built using Arcane…