Motherships have a chance to appear in regions (well, not the Origin region) in the interval between 25% and 75% completion. On average, you should expect two motherships per region. If one spawns, it'll show up somewhere in the middle 2/3rds of the region, possibly hovering over unkilled forts or even cities. You have five minutes to kill it before it disappears; if you kill it, it spawns eight smaller escape pods which flee in all directions. The mothership and the escape pods all drop the same loot, so you can get 9 loot bags if you kill them all.
I finally eliminated the debuff you apply to enemy forts by cutting them off from their neighbors. It was just a little too unobvious and a little too abusable.
Please post bug reports and other comments below. Thanks for playing!
They spawn some distance away from their target and slowly move toward it. Perhaps you were at location A and a strikeforce spawned at location B (headed to kill you at A), then you just happened to teleport over to location B? Or maybe it's a real bug...
I was doing no teleporting, just clearing in a line. I saw it spawn, so it wasn't as though I drove up onto it. I have to say though, it was pretty surprising... and not in a bad way.
Edit: Dreadfangs seem to need to go through their cooldown period, immediately after spawning, before launching their drones. I had another one materialize just out of view range (kinda nice that they spawn so close, tbh) and its drones didn't launch until it was 90% dead. Shouldn't they be able to spawn and immediately launch their fighters?
More strike weirdness. This one spawned just outside of visible range, and was facing away from my position, similar to the first one I reported. I was the only player online. There was a second event, which I do not have an image of (scared the crap out of me) where the Strike spawned directly on top of me. These happened in the same part of the same region, not sure if that's important. Also, again, there is an odd period of time, directly after spawn, where no missiles or drones are launched by the Strikes (I thought it was just the Fang, but was mistaken).
Edit: Spawned on me
and another spawned just off to the side, flying the wrong way.There are three more which spawned on me or flew the wrong way, but I did not get a screen shots of them.
I would estimate that ~25% of strikes are either heading the wrong direction, spawning on me, or both. It may be higher if there are wrong-way strikes I never even see.