Scifi and realism

[Trinoya]

I'll start off with the main question, how important is it that in scifi games real science is also involved with realistic facts?

For instance, say you're playing a sci-fi game and your character has a laser gun, is it important that you can know much much energy (in joules) a single laser beem discharges?
Is it important how much energy it takes for space-ships to go faster than light?
Is it important that (some of) the chemical metabolism of a silicon based life is worked out?

The number rule to follow is consistency. It doesn't matter if you completely muck up the scifi of your universe, as long as you stay consistent about it.

It may be good to do your research in regards to known facts, but just make sure that if you can "redirect your graviton emitter" to "empower the core reactor for the hyper jump through the slip gate streams" resulting in a "point twenty increase in our light speed capacitors" that you write that **** down.

Someone will, and they will remember it when you least expect it.

So yeah, to reiterate... keep it consistent.