It is a fork of Spring engine, called Recoil, so yes.

Depends what you are looking for. If you enjoyed capital warfare, no. They are expensive now. If you like big tidi fests, sure. What were you doing/enjoying back then?

Frontier is not Vanguard. Frontier is a blockchain based survival game (whatever that actually means), Vanguard is the FPS extraction shooter.

If you rebind the pause/unpause button, Starsector can be played mouse only too.

Periodic table names best names

I used to just name it after the os running on it, but I’ve now switched to periodic elements. But to not be too predictable, I randomly choose one, e.g. osmium, then helium, then argon etc