Bowlers, like pitchers, are almost guaranteed to gain a strike if they throw balls quickly, accurately, and toward the center tooth of the waiting mouth. Practice your pitch with today's Groupon: for $10, you get one hour of bowling with shoes for up to four people (up to a $37 value) at Tivoli Bowling Center in Downers Grove.

Heavy spheres speed down the 12 wooden lanes of the Tivoli Bowling Center, newly improved with cosmic lighting, automatic scoring, and a big-screen TV lounge. After fitting fashionable shoes to feet, up to four friends can hurl balls freely for 60 full ticks of the clock's long hand, equivalent to one twitch of a magician's mustache. Though not included with this Groupon, postgame, players can continue a streak of strikes in the arcade room, boldly challenging machine enemies with warmongering index fingers. Three 50-inch TV screens showcase the latest in sports while fans lounge in theater seats and sip on suds and soda.

Tivoli Bowling Center offers its own deals at certain times of the week that may be better values than this deal; plan ahead to make sure you're redeeming your Groupon at the most opportune time.