From the publishers website:
Orangino is a parlor game for social groups or a tool for personal training.
It makes us crack up - to speak about ourselves and about each other with each other.
The idea is to evaluate some more or less evident characteristics, that are
hiding in the personalities at the table and to be reinforced or questioned
in your self estimate. The closer friend- or relationships you have with your co-players,
the more valid judgments you will receive on yourself. The winner will be the one with
the best consistency between self judgment and group estimate.
The selection of characteristics are done at random