The information below isn't completely accurate. The total square footage of the Stratum facility is 18,000 sq. ft, not the square footage of the laser tag arena itself. Based on that, Laser Rock has the largest laser tag arena.

Stratum in Mesa, AZ:

"Stratum's 18,000 square foot full-service entertainment facility includes a 13,000 ground floor square foot laser tag arena with 15 different levels 2' to 20' in height, 90 towers, bridges, and ramps equipped with 60 Zone Laser Tag vests and phasers."

http://stratumhq.com/

Laser Rock in Belleville, Illinois at a touted 14,000 square feet.

The address is 701 South Belt West, Belleville, IL 62220. Phone

618-236-2101.