Here is a large poster from a German McDonalds. It says "Daumen Drauf!" which means..."thumb on". Why?
It is a German local-ism, a common alliterative word for mini-games that makes sense in its context. Credit to Link for translating it.
This is part of an in-store display. Once a store is done with the promotion, some times these are sold, or given away to a lucky fan. Items such as this are a rare part of any collection.