It is National Bowling Week and that means you can get a voucher for a free game (up to $6) when you register on their site with your name and email (though you can opt out of receiving emails from them). The coupon can be redeemed this Saturday, Sept. 5 at participating bowling centers. No age restrictions.
Find if there are any participating centers near you. I found four in the Los Angeles area, including Pasadena, Anheim, Santa Monica and El Monte. Then consider joining to get your free game.
Caveats: limit one free game of bowling per person, per valid email address, per coupon. Valid when lanes are available and unreserved. Not valid for shoe rental or concessions, and not to be combined with any other bowling offer.