Yikes... Crunch time is something awful, I have to be honest. I don't work in gaming, but I do work in programming, and I've been crunching (working 7 days a week from 5am to 10pm) for the past few months with not a lot of overtime pay, no one asked for me to do it, but I do it anyway due to some idiotic sense of involvement in the project. I wouldn't justify crunch at all really, my relationships suffer because of it, my health gets worse, hell, I'm spending most of my birthday today at the office on meetings and then I'll keep working when I'm home! It sucks, but all I'm saying is that I get why someone would do it in an environment where it's not mandatory, specially if I was working on a videogame and not some project for a company.
Now on the other hand, mandatory crunch can really, really go fuck itself.