For sci-fi games, it'll be better if you use some "minimalism" style fonts. It's style is very very suitable for that. Those fonts usually only use straight thin lines, and the corners either sharp or rounded, no ornaments at all. Or you may interested to employ stripped & digital fonts too.
You can try VoxSlanted, AlienEncounter, Monoglyceride, Usuzi (taken from Isuzu vehicle), Victor, AstronBoyVideo, DigitalDream.
My fonts suggestion above are only based on my bare memory, still haven't got access to my fonts collection (2000+), so if some are not free, plz don't shout out.
May be you want this too :