[quote=ASTA]
It seems that the only way to prevent yourself from getting invaded and destroyed in this setting is to make your nation completely cut off from the rest of the galaxy.
[/quote]

I was more or less cut off from everyone else.

And duck, you ALWAYS cheat, in some form, as Darkwolf says. You used to have giant-ass planetary shields that block EVERYTHING. Like, half your workforce would have to be doing the most energy-producing thing possible to keep that shield up without fail.

I just make it so that everyone can see it, instead of being the co-GM where I can do whatever I want without complaint.