C&C 3 The Forgotten: Mod Faction Showcase

The Mod C&C 3: The Forgotten was fully released in 2010. Years before the mod Tiberium Essence released their own version of the Forgotten (both are well put together and feature a "old weapon salvaging theme"). The mod even comes with a upgrade structure that all faction can capture for a (mutually exclusive) speed, health, or damage boost. The mod also has a campaign though other YouTubers have covered the campaign I bet, I don't really have time to showcase a entire campagin (though I will admit the fact the mod has it's own campaign makes it VERY note worthy). The Forgotten can also upgrade their Longhorn tank with electric armor that zaps enemies and somehow not your own troops. There's also a special blimp that can detect stealth.

The map I have featured in this video has the mutually exclusive upgrade structure and garrisonable buildings that crumble when you see them like there in a weird, decaying Detroit dimension.