Well, after doing some checking on this myself today I found out a few things after contacting Tilt headquarters in Texas (
www.tilt.com).
Yes, Tilt is gone from their space across from Tony Roma's at Capital Mall in Olympia, Wash. That explains why the phone isn't being answered. The mall wants that space to complete converting that area into a full 'food court'. Tilt was the last non-food store in that area of the mall.
Tilt headquarters has said that they are relocating the arcade to the other end of the mall in front of J.C. Penny's and should be reopen in about 2 or 3 weeks. So evidently they are only gone temporarily during a re-location. The phone is not connected yet at their new location.