I'll start with Destructoid: http://www.destructoid.com/legend-of-gr ... 1353.phtml
From the comments section, about Grimrock 1:
Then the day it launched (I think it unlocked on Steam at like 3 or something) I had a presentation to go to from my boss, only to get there and have my boss say "alright, let's wrap this up quick, Grimrock unlocks in 20 minutes". ended up that of all the people at the presentation, only 2 hadn't pre-ordered it, and everyone (my boss included) just wanted to sit down and play it. The rest of the work day was spent in dungeons instead of working.