I spent most of last night trying to get it to download. I downloaded 7.6 of 7.7 gigs and it went on for 45 minutes thinking about that last .1gb. Then I restarted and it tried to download 8.3gb. Then Steam crashed and when it started again it was downloading a 23gb patch which finally worked.
It was the closest to original XCOM that I have seen, I quite enjoyed it, but I'm rather biased here.
There are things I like about Firaxix XCOM but it's quite a different game overall.
I don't like them departing from simulation like mechanics to scripted events.