In Redmond, I game with a group that plays at Uncle's Games in the Redmond Towne Center on Friday nights. There is also a group that plays at Genesis Games and Gizmos in Redmond on Tuesday nights.
I've gone to Genesis on a visit to Seattle (I go 1x/year at least), and it was pretty sweet. I didn't know about Uncle's Games, but I will try to keep it in mind. My sister lives in Issequah now, and a friend lives over by 124th and 124th... Redmond Towne Center is accessible when I'm there.