Drop everything and round up some friends for some good, old-fashioned SPARTAN-slaying! Lasers, energy swords, and needlers, oh my! The ultimate in fragging at parties back upon its initial release (and continuing today as the series has evolved), Halo turned friends into the fiercest of enemies and tore a rift through even the closest of relationships -- and that was nothing compared to the emotional trauma the losers had to go through. Not us. We're killtacular.