Years ago, I found this gem in the bargain bin in Wal-Mart and instantly fell in love. For an old game it still runs well and was one of the few games (even today) to be optimized for four cores. It needs that power to run because you will have awesome battles of an epic proportion. Each player can have up to a thousand units on the field at any one time. Even for an RTS game with thousands of units being rendered at the same time the units are well detailed and animated. Sup com is also the only game I have that supports multiple monitors, which is nice. It is too bad that there is no longer any supported multiplayer, but Sup Com Forged alliance does have multiplayer with Forged Alliance Forever, which is run by fans of the game around the world. The fans of Sup Com have even added support for mods and up to 12 player games, which is astounding with the fact that each player can have a thousand units.
Great Game, I recommend getting both Sup Com and Sup Com Forged Alliance. For $3.74 it is a steal and even for full price, it is worth it.
I do not suggest getting Sup Com 2, which was developed by a different company and the multiplayer is truely dead.