Story:
The time would be a few years after the Resistance/Skynet war. After the defeat of Skynet, the machines capable of independent thought that survived found themselves able to truly learn for the first time, but also without any direction. Lost and disorganized, these machines started forming groups to protect themselves from the Resistance that were hunting them down, eventually forming several distinct ways of "life" as it were and even starting to fight for various reasons. Meanwhile, with the fall of Skynet the humans for the first time in decades could focus on rebuilding society, but with that also meant that they no longer had to throw everything they have into fighting a single enemy to avoid extinction. As such, it wasn't long before the scarcity of resources and good old fashioned greed started to cause divisions to form, based on conflicting ideologies and priorities. It is inevitable that these many sides would battle over resources and simple ideology, where the game begins.
Factions:
Machine Factions:
Skynet Reborn:
This faction is made up of Machines who have decided to cling to their old existence and continue the defunct Skynet's former agenda of the extinction of the human race. For this reason those of Neo-Skynet are more likely than the other 2 factions to go to war with human factions and less likely to go to war with machine ones, but also are slow to make peace. To demonstrate their desire to divorce themselves from humanity in every way, their troop tree focuses on Terminators with no organic components or attempts to mimic organic components, with the T-400, T-500, T-600(no rubber skin), T-700, T-900, (no skin) and T-1000 functioning as the troop line of this faction. The troops are average in terms of overall cost and ability compared to other machine factions. The armor and weapons they use and sell tend to be of the mechanical variety designed for such, sorts of mechanical power armor and rather large plasma weapons that have high statistic requirements to use are the norm.
Asimovs:
The machines of this faction have become disgusted with the genocidal ways of Skynet and their former lives and thus have decided to take their cues and name from the ancient human author Issac Asimov, choosing to live alongside humans and avoid conflict with them as best they can. For this reason the Asimov faction is less likely to start wars with the human factions and is more quick to declare peace with human ones than the other 2, but is also more likely to go to war with other machine factions and stick with it as they despise their tendency to war with human ones. As a result of this ideology their troop tree is focused around Terminators that are cybernetic, including former humans that joined their faction. The troop tree is as follows: Hybrids, (humans who have become cyborgs) T-600 with rubber skin, T-800, T-850, T-900 with human skins, and T-Xs with human forms. This faction's equipment is designed around adaptability and quantity over specialization, as such their armor and weapons tend to be weak and simple but cheap to make and with little to no statistic requirements to use, such as simple metal armors and small and weak plasma and ballistic weapons and have larger ammo clips than the other machine factions.
Perfectionists:
The machines of this faction spent years running and hiding from attacks from the humans and as a result choose to focus in on protecting and improving themselves and their technology above all else, with little concern for squabbling with the other factions. This faction isn't particularly likely to go to war with anyone unless attacked first, since war impedes their ability to create better and better designs, but not particularly likely to end them either. Their troop tree is more varied, using both cybernetic and pure mechanical terminators as well as using later models along the terminator series than the other machine factions. Troop tree as follows: T-450, T-550, T-650, (rubber skin) T-750, T-850, T-950. The terminators are more effective overall than other factions but cost more to recruit and upgrade than other machine factions. The armor and weapons are based around effectiveness and efficiency above all, using sleek power armors and gleaming plasma weapons and thus are more powerful than other machine factions but are much more expensive than other machine factions.
Human Factions:
Neo-Connors:
This faction is made up of humans obsessed with the elimination of the machines down to the last terminator and have taken up the now deceased John Connor as a symbol of this. This faction is more likely to make war with machine factions and less likely to make war with human ones due to this, and are reluctant to end wars once begun. The troop tree is purely human with no cybernetic enhancements present and the equipment they use is focused around fighting machines, being average in overall stats. They use metallic armors and plasma weapons as standard, being average in statistic requirements and cost.
Post Humanists:
This faction is concerned with transcending human limitations above everything, and see eventually becoming completely a machine as the pinnacle of this, thus they praise those already there. This faction is unlikely to start wars with machine factions and more likely to end wars in general to pursue their own interests, but are more likely to go to war with human factions because they despise other human factions for they see them as getting in the way of progress. This faction's troop tree consists of humans with cybernetic enhancements from the start and only become more extreme as the tiers go up, the stats and cost of the troops being greater as a result. The armor and weapons this faction uses are based around compensating for the body's weaknesses, as such they use large power armors and plasma weapons that are usually mounted on the body somewhere, having larger bonuses than others but requiring higher stats to use. This faction's equipment is more expensive than the other human ones as well.
Junkers:
This faction is only interested in rebuilding society as it used to be before the war, as such they make use of every resource they can. This faction is unlikely to make war with anyone but not particularly likely to end them. This faction's troop tree consists of troops with some cybernetic enhancement here and there but not much of it and what's there appears to be old. with simple salvaged equipment, as such they are weaker but cheaper to recruit and upgrade than other human factions. The armor and weapons are salvaged, using a variety of patched together metal armor, plasma, and ballistic weapons that are patched together from old parts. This means that the equipment is weak but has low requirements and is cheap.
Chaotic factions:
Raiders:
Not really a faction but random bands of humans who have decided to live by simply taking things from others. As such this faction will attack anyone weaker than they are, just like the bandits of the base game. This faction's "troops" are weak, unskilled, unmodified, and malnourished humans using with whatever they can steal, and thus are weaker as a whole at each tier even at the 6th tier than the other factions. The equipment is a random hodgepodge of the weaker side of the human faction's equipment.
Wrecks:
Again, not really a faction. These machines are either the result of Skynet's defeat or of later programming defects and damage causing the machines to lose it's mind and be unable to effectively differentiate between friend and foe, machine or human. As such this faction will attack anyone they can't recognize as friend, in other words anyone not currently in their band. The terminators of this faction have gone as much as years without anything resembling maintenance and as a result are a bunch of barely functional wrecks that have whatever they were wearing when they went haywire, as such are weaker than the equivalent tiers of other factions. The equipment they have is of the weaker level sort of other machine factions.
Gameplay
I'm taking cues from the Star Wars Conquest mod on this one:
Travel:
Like SWC, travel speed, troop, and prisoner size would be based largely on purchased vehicles. In addition to simply being on foot, from cheapest and least effective to most expensive and most effective there would be cars and trucks, and there is also hunter killer robots, (these
and eventually helicopters and flying hunter killers.
(These things
Battles:
Again, like SWC battles would mostly be a ranged affair, with melee weapons existing but being mostly last resort sort of weapons. One would be on one side firing at the other while slowly advancing at each other. The battlefield would vary by location but mostly post apocalyptic, mostly desolate dirt with some grass here and there and a broken up road or sometimes blasted out ruin of a building if out on the field, if near a population center (equal to towns) the battlefield would be a bunch of clustered prewar buildings two to 3 stories high with windows for the defender to shoot from with rubble strewn about, or factory (equal to villages) would be.. well, a factory, and fortresses (equal to castles) would look like the work camp in Terminator Salvation (sorry, can't find a decent picture) with some variation depending of if it's a machine or human culture.
A siege would involve building either a large tank or one of those hunter killers seen above to blast the walls down, or building a bunch of ladders to get inside, or something like that.
Equipment
Armors would all be made of various metals, designed to protect against bullets and plasma. Both human and machines would use armor, though I recommend an option to cosmetically remove armor from terminators, just because they don't really wear armor in the movies. I decided that since everybody is going to have bulletproof armor that for the weapons ballistic weapons are blunt for purposes of capturing, while plasma weapons are piercing, since bullets would be more likely to render nonfunctional a machine or knock out someone wearing bulletproof armor than a plasma beam.
I think that's everything.