A unique and ultimately powerful form of destruction, megaweapons are a new and fundamentally different class of weapon, one that has had major repercussions all across the Grand Alliance. The destruction of many worlds and the heavy loss of life by their use has sparked a raging debate within the remains of the Grand Alliance, one in which the use of these deadly weapons is both vilified(the Orion Cantons) or promoted(the New Human League). The ability to destroy a small moon, entire planet, or whole solar system with just a few weapons has long-term moral implications, however, some Grand Alliance members have gone forward with deployment of these weapons, mainly in an effort to hold back any future Hre’Daak incursion.
The final three human states that were born out of the ashes of the destruction of Terra and the remains of the Armageddon War(the Reformation Group, the New Human League, and the Frontier Alliance Worlds) have all coordinated investigation and development of this weaponry even thought they are fundamentally at odds in many different areas. The fact that the Terran Region of the former and much hated Pan-Sentient Union was attacked and brutally devastated by the Hre’Daak before their violent wave of annihilation could be stopped is the primary motivation of this cooperation, and fear of their imminent return. It is technically illegal for individual planetary systems to possess megaweapons according to the Treaty of Balthasar's World, and for reference the class of megaweapons are listed below:
Planetbusters
Gigaton Warheads
Nova Bombs
Phase Torpedoes