I've played at a field in Athens, Paintball Atlanta, and one other in Cumming GA.
I played at Nitro paintball recently for a bachelor party. This has been by far the best location I've ever played. Also, the staff genuinely cares about the well-being and safety of their customers. Their set up allows for an intense game in a natural wooded area. I look forward to returning to play here more in the future. Highly recommended to all.