If you are in Zanysville, Newark is closer (30mi instead of 60) than Colmbus. It is a factory town with one comic / game store, but the selection of RPG stuff and minis is pretty good. The store is called Comic Shop Plus. (comicshopplus.com) It started as a comic book store but has developed an ecclectic, but small, inventory as a result of it being the only store of its type in town. The last time I was there, they also had a LAN for head to head computer gaming.
(Take route 16 to Newark, go south on route 79 to the first traffic light. Turn right. Go to the first traffic light. Turn left. It's at the end of the strip mall.)
But, if you do go to Columbus, I liked Ravenstone the best. The owners are freindly and knowledgeable, as well as being located on the north east end of town closest to where you are. (Directions as above, but don't turn down 79. Take 16, to 161. Turn left on Karl road (approx 32 miles from Newark). They have a good sized gaming area, and large inventory.
The Guard Tower is the largest gaming store in the Columbus area and seems to have a sales staff that is pretty "with it". You'll have to go elsewhere for directions to this store as I rarley visited due to the distance from my home. I do know it's way out on the west end.