Tiberian Apocalypse is a Partial Conversion for Command and Conquer 3: Tiberium Wars with the goal to create a true Tiberian Sun sequel. GDI, Nod and the Scrin are getting a complete overhaul.
Functions mostly like in CnC3, but it's more useful. For one, it's built of 10 inch armor steel, instead of tinfoil.
The guns have considerable firepower, and it gives a small build radius (if possible, only for defenses). Also heals nearby infantry, and repairs up to 4 vehicles at once.