I don't even think I modded it and it was a fun game. For under $4, if you haven't played it you really should grab this. Steam is turning into the best bargain bin outlet, lets you really fill in the stuff you've missed and wouldn't go back and grab at $20.
Odd, I'm seeing it for $5, but it still says its on sale.
"My great-grandfather did not travel across four thousand miles of the Atlantic Ocean to see this nation overrun by immigrants. He did it because he killed a man back in Ireland. That's the rumor." -Stephen Colbert