Hotile Water: Ataeus Rising is one of favourite older games.
From the moment i played the demo back when it was released! i was hooked unfortunetly for me at the time i had no method of obtaining it.
Basically you control a carrier ship which is 1 of two left in the Antaeue Project with the second being out of commison which has the ability to construct certain vehicles Land/air which will expand in variety as you play the game. The pilots for your vehicles are actually the soul of someone who died piloting one of the vehicles you harvest that have been recorded into a soulchip.
Construction happens because of the creation engine which is full of tiny nanites that can build things really fast due to sheer number of them however without energy you will not be able to make things.
You will need to collect energy via harvesting metallic objects that are littered throughout the levels.
To upgrade units/unlock tech you will need to fight and analyse vehicles/weapons.
From what i can tell thus far this is original untouched code that still play's well. The Resolution is still pretty low but don't let that put you off.
This is a strategy game that is in dire need for a HD remake or a sequel.
I am now a happy owner with 3 copies. 1 from amazon, 1 from gog and now thank to steam i now have it in my steam library.
So what are you waiting for Captain? Buy it and play it.