Oof I lost my entire Luna fleet to the Aliens.
It was really fun, tbh. I'm building another fleet with what I learned from that one.
I had 4 dreads, several battleships, and a half dozen PD Monitors. I had decent drives but most of my ships are big and slow. It was a mix of coilguns and plasma with long range. I put 20-30 particle beam PD spread across the fleet, and that seemed to be enough.
The aliens brought 2 motherships to earth, along with a few dreads, and a dozen other ships. They unleashed an enormous swarm of purple missiles, but the PD beams ate them all. Unfortunately, the plasma was less deadly than I hoped. The dreads went down, and my ships killed half the smaller ships on the first pass, but the dreadnoughts went down after being flanked, and couldn't penetrate the fronts of the motherships.
I will get better drives soon, but for right now I think I'm going to go back to missiles. I think I've realized that dreadnoughts make really good missile boats. The bigger the ship, the more magazines you can fit. Magazines do increase the amount of missiles that a ship can fire in a battle. With 5 magazines, the ship can fire 6x as long. A dreadnought with 5 mags and 8 torpedo launchers has 240 missiles it can unleash in a battle if it survives long enough. And I can just slap heavy armor on it and turn it into a brick, since the aliens will come to me.
I like the Ares torpedoes most, over the nuclear-tipped ones: 3g is decent acceleration, 2300 damage will kill smaller things in one hit and damage a mothership heavily, and they come with 6 rounds instead of 5. I find that concentrating launchers on fewer ships improves PD penetration, since the missiles all take the same path through the overlapping beams. I expanded the Luna L1 Lagrange shipyard to 8 T3 docks, so now I can play around with some different ship builds. I figure 4 of those and 4 plasma lancers will have less trouble with the motherships.
I'm about to launch an assault on their Ganymede fleet, which is pretty large and has a Ring backing it up. But I've got a pretty large fleet, too. I'm sending colony ships to each gas giant, and will build shipyard ring habs and pump out fleets to secure each of them.
Unlocking ring habs when you have over 100 orbitals and settlements is honestly intimidating. I've got more of every resource than I've been able to spend, but it takes a lot of clicking to upgrade each one optimally. But, turning my nanofactory Dyson Sphere around mercury into a nano manufactory facility Dyson sphere is going to be a very profitable venture. It better be. I'm losing 10,000 income per month while they are busy upgrading very slowly. But that's only about 50 facilities worth, and I've got more than that built up.