The year is 2050. Three ground relay stations link your cities to an orbital
directed-energy grid. Click anywhere in the sky to route a lance of coherent energy
to that point — it detonates on arrival, vaporizing anything caught in the burst.
Ballistic warheads fall straight and slow. Hypersonic glide vehicles jink and dive fast.
Drone swarms split into scattering fragments. Protect the domes below. They do not regenerate.