Unless something new opened up recently, you don't have much.
The only place I could think of that has more than your chain bookstore variety of RPGs would be That's Entertainment (
That's Entertainment -New England's Largest Collectible Store! ) on Park Ave in Worcester, but they are mostly a comic book store--the game section is good.
There used to be two other stores around. Fabulous Fiction used to have more paperback SF books and a large game store, but I believe they closed in the mid-to-late 1990s.
More recently, there was a nice shop that had play tables and other things in the early part of the decade, called Gameboro, which was located in Cherry Valley, MA. They specialized in gaming but that was during the big card and d20 boom, and I think they shut down sometime a few years back, probably around/after 2006.
Another Cherry Valley (Worcester-Leicester) store is called Master Hobbies (
R/C - Radio Control - Airsoft - Classic Army - Paintball - Models - Diecast - Welcome to Master Hobbies ) --I think they might have gaming stuff but they are more a jack-of-all-trades hobby store and I have no first-hand experience with them.
South of Worcester is probably best know for dozens of Pizza places though--mostly specializing in Greek style. (I can't believe how many Pizza places there are in my hometown).