The Barbarian Group has created an extremely simple but also very good advergame for Red Bull and its Flugtag.
I like it a lot because it perfectly fits the Flugtag day concept. After playing it you will not say "wow! look how cool is this game" but rather "cool! this is what Flugtag is about!". It's a game which delivers a marketing message, and unfortunately even if advergames are now so popular, this is not so common.
To find out what Flugtag is, click here.