There was a mod for Hellgate London, maybe it was called Hellgatus London? Or something like that? I search for it and can't find it. I guess I have the name wrong. It had a rocking sound track, added a few things to the game without changing the game itself. If you know this mod, please help me out with the name. Thanks a bunch.

Is Hellgate London even playable anymore? I thought it was a dead MMO.

It's a Diablo clone as far as I know; no reason why it shouldn't be playable.

Was it called Hell Is Back? Or maybe Hellgate Revival?

You may be referring to the mod available on the hellgateaus site, Hellgate: Revival?
If you check the discussions over where it's sold, you'll find a thread about a mod version that works with the version sold there too.

Thank you! That is it. Now, to get them to work. Thanks again!! I was also a stand alone shooter. Third person shooter/CRPG