Terminator II

From Wormhole Sci-Fi MUD Homepage

Here you'll find an entire city trapped between an epic battle between two machines from the future. One, something of a panzer tank that destroys everything in its path, and the other able to take any form, including knives and swords. Both pursuing the same target, some random worthless punk kid that hangs out in video arcades.

There have also been rumors that a gateway into the future never closed as it was expected to, and while I cannot attest to the validity of these rumors, it may be worth investigation. But there's no guarantee you'll find anything pleasant...