The NightFall mini mod is a few tweaks to my Ten Races mod (StarFire for Entrenchment) that limits planet resources and raises the costs of ships and their build times. It is meant to have things start small, with just a cap ship or a few frigates against an equally small enemy. As the game progresses of course, more planets and more resources will mean larger and more elaborate fleets, both for the player and the enemy as well.
It changes just a few small variables, but changes the way the game is played i believe.
And that is a nice difference. 
Link to wincustomize is here:
https://www.wincustomize.com/skins.aspx?libid=71&c=1
Link on filefront can be found here:
NightFall v1.7z
Let me know what you think, 
-Teal