The alternate universe takes place in that universe's Earth, one of your main characters controls an empire on this planet. Doesn't matter what character you use as the leader because the strength of the empire depends on population, size, military budget and soldier moral. So to get into the event you would basically draw an area where your empire is (don't make it too big we want at least 10 players), you can add some lore to the empire if you want, but we're mainly focused on the stats i listed earlier. Once we have enough players, a world war can start.