I don't know if either of these places has a copy right now, but
Black & Read (80th & Wadsworth - Arvada)
has a nice selection of stuff. I think of them mainly as a used book store, but part of the advantage of that is that they aren't trying to "dump" something that's only a year old.
Total Escape Games (120th & Main - Broomfield)
has tables and active groups, and likewise has a nice selection.
+1 for tegs and b&r.