I was surprised by how deep down into detail Valve went with L4D2. I guess you could call it more of an easter-egg than detail, but I really thought it was cool how they went as far as to establish “The Midnight Riders,” as a real band.
Oh, and there’s 4 of them. L4D3 or DLC, already?
I’m fond of the music they put into this game.
Especially “Re: Your Brain”
sings
“ALLL WE WANT TO DO IS EAT YOUR BRAINS!
It’s not unreasonable, I mean, nobody’s gonna eat your eyes”
i like the provisional temporary band member they have had since 1985
“Midnight Ride,” actually isn’t bad at all, if it was just a bit faster, I’d like it more. 
Old
Your face!
Burn!
I want more Midnight Riders.
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.