You have them. You can't really use them. Such is the way of the grind towards actual gameplay in the modern age.
Meanwhile, Futuremark had a fully 3D space FPS back in 2008, called Shattered Horizon. It never really took off, but if you imagine those duels in Ender's Game in zero G, it was like that except you could thrust in any direction. Such an untapped dimension of gameplay, up and down were all relative and you were never really safe behind cover.
Not sure why you brought it up, but I did love the shit out of that game for the few months it had a decent player count. There really hasn't been anything since to replicate that style of true zero-g combat.
You guys sold me. It's not for sale anywhere anymore though! Checked steam, GOG, is there any deal , no where to be found. Would have to pirate it I imagine. We should get this group that replied in the comments to play together. It seems like its possible
Anyone shit talking people just minding their own business never socio-emotionally developed beyond being a tween. Unfortunately they're all too common.