Grandpa Jim wants to throw a house party for your kids, where he'll teach them about religion and old timey fun in a lame, milquetoast approved way! So this is what (some) kids did for fun before the interwebs? Sign me up!
By the way, if you want to throw a Grandpa Jim style party of your own (and who wouldn't!), there are party kits available online for as little as $7 American. Go fun!