PVKK: Planetenverteidigungskanonenkommandant - yeah, let's circle back to the title - is described in the first sentence of its Steam bio as a "cozy" game. I entertain suspicions of cozy or cosy games, inasmuch as they are increasingly framed as a kind of antidepressant in the face of a darkening world, but that's OK, because the remaining 17 words in the sentence are: "Operate your planetary defense cannon to fend off an interplanetary invasion from the comfort of your [cozy] bunker."