Grab the family and head out to bowl for free in celebration of National Bowling Day at AMF and Brunswick Zone lanes on Saturday, Aug. 13. This will occur at local alnes from 10 a.m. to noon during the Million Pin Challenge, which benefits Feeding America. No purchase is necessary. Later, from 8 to 10 p.m., celebrate with contests, giveaways, food and drink specials at participating bowling centers nationwide. AMF will donate half a million meals to local Feeding America food banks, according to a release. Click here for the deal.