Paintball is a lot like chess in that both require complex strategizing and both are almost impossible to win against autonomous robots: Gain the edge in your robot battle with today’s Groupon: for $25, you get all-day admission and rental gear with unlimited air (a $30 value) plus 400 paintballs (a $20 value) at Reno Indoor Paintball (a $50 total value).

Reno Indoor Paintball, one of northern Nevada's only professionally staffed paintball fields, pelts indoor stain-slingers with an abundant supply of paintballs, high-quality rental equipment, and an unlimited air supply. RIP's field is filled with obstructions of all shapes and sizes for dye drivers to duck behind, leap across, or hold a rap battle with. Splatter achromatic allies or soak neutral nemeses from inside a suit of armor until supplies run out or team captains are overthrown.