Modern paintball was inspired by the Victorian era’s popular sport paintbrush fencing, in which the player that first signed his name on his opponent’s chest won. Leave a mark on your rivals with today’s Groupon: for $28, you get a paintball package at Westworld Paintball Adventures (a $54.59 total value, tax included). The package includes:

• All-day field admission (a $20 value).
• Equipment rental (a $9.95 value), which includes:
• Marker
• Air tank with unlimited compressed air
• Hopper
• Elbow
• Goggles
• Chest protector
• Ammo carrier
• Barrel sock
• 100 paintballs
• 400 additional paintballs (a $20 value).
  
  

A hailstorm of chromatic projectiles whizzes through the air at Westworld Paintball Adventures’ dual facilities, pelting players of all skill levels in splatters of adversarial paint. Equipped with protective gear and 500 paintballs, players descend upon the field of their choice for unlimited open games. In the Xtreme Pursuit Indoor Arena, 30,000 square feet of aqua-colored conflict abounds, with opposing soldiers ducking behind bunkers, inflatable obstacles, and slower-moving teammates during matches. Free WiFi enables squads to coordinate tactics via their team’s blog.

Outdoor onslaughts take place at Splatter Ranch Outdoor Arena in Scottsdale, where the field sprawls across 20 acres of shrub-dotted landscapes. Buildings, gullies, and natural hiding places pepper the battlefields, opening up opportunities for ambushes or midgame naps. Experienced referees coordinate and oversee each match, ensuring fair play and the safety of all participants. All players younger than 18 must bring a liability waiver signed by a parent or trustworthy reality TV star before taking to the field.