I'm at 1079 South Street, Tewksbury, MA.
1079 South Street is a HUGE lot, and Action Games Paintball is nestled deep in the back. When you turn onto the dirt road, you'll first see some large trucks and trailers, followed by some horses on the left. Just keep going. You might even see a "No Trespassing Sign" and a "Security Cameras in use" sign. Keep going. About half a mile down, the road will fork: you can go straight or turn right. Go straight, and Action Games will be just another 100 yards farther down the dirt road.