The family is the basic unit of society—yet, statistically, family members are the very people who are most likely to steal the last soda from the fridge. Solidify family alliances and suss out enemies with today's Groupon: for $12, you get a four-hour unlimited attractions pass at Boomers! Livermore (a $24.99 value).

At Boomers! Livermore, thrill-seeking families and fun-enabling friends can attack any of five available attractions. Recreationists can wile away the hours at the helm of purring go-karts, scaled-down kiddie go-karts, and bumper boats or explore the vehicle-free joys housed inside the laser-tag arena, game room, and the game room's prize-redemption center. Unlimited-pass holders can also putt the golf course, which like all the best horses, marshmallows, and spy equipment, is miniature.