Paintball is a lot like chess in that both require complex strategizing and both are almost impossible to win against autonomous robots. Reveal the weaknesses of fellow humans with today's Groupon: for $20, you get a two-person paintball package at Sgt. Splatter’s in North York (an $87.90 value).

More than 20 different gaming scenarios ensure an abundance of adrenaline pumps through Sgt. Splatter’s 35,000-square-foot, two-storey urban war zone, which was designed by a Hollywood set specialist and features a sprinkling of abandoned automobiles. A two-person package provides general admission and four hours of field time (a $29.95 value/person) at one of Canada's largest paintball fields, as well as upgraded Tippmann 98/BT Combat guns (a $10 value/person), 100 paintballs, full face masks and goggles, unlimited carbon dioxide, upgraded jumpsuits (a $4 value/person), and armbands to identify teammates and targets. The site encourages strategic teamwork for gaming scenarios, some of which involve the capture of an enemy flag, prevention of a nuclear crisis, or the bottling and distribution of opponent tears.