We play slugbug, and have a few others as well. Slugbug is the only one with contact involved, and that is more of a tap on the shoulder. We also call out school buses (though you have to SING "Schoooooool Bus"), yellow trucks (yep, any kind of truck that is also more than half yellow), and PT Cruisers (PT Blue!). We don't keep scores, probably because I would cheat knowing where all the school bus parks are. Keeps the kids from killing each other when we are out. Sadly, my wife is a bigger cheat than I am. She'll randomly invent new things if I get too many VW's in a run. Her favorite is "Cedar Beater". Yeah, cedar trees. Which are as common as nickles around here. *sigh*