Anyway, to the book. The 12th volume of the series sees Astrerix, Obelix and Getafix head to Athens to compete in the Olympics which at the time was limited only to Greeks and Romans. The Gauls consider themselves Romans by virtue of being occupied by the invaders which suddenly has some of Rome’s top athletes and administrators worried due to the magic potion.
In what is a funny view into the inner-sanctum of sporting prowess, Greek philosophy and European politics the ROmans become increasingly unconcerned with attempting to take on the Gauls, and there world-famous orgies and feasts soon infiltrate the Greek camp living off olives and vine leaves which in turn concerns the Olympic Committee (which at this point in time does not seem to be susceptible to backhanders and other bribes).
It is worked out that banned substances that increase sporting prowesses are not allowed which then has Obelix banned from competing and Asterix is forced to train So it goes on with some skullduggery (the Greeks seem to be cleaning up everywhere) and the Committee, not wanting to alienate the Romans, creates a new event for non-Greeks only.
This book was printed to coincide with the Mexico Games of 1968 (into English in 1972 to coincide with Munich) and then into a film aligned with the 2008 Beijing Olympics. It also has been adapted into a video game which I believe is a first for the franchise.
Also of note, the two authors make a guest appearance as officials in registering athletes, although their nameplates are in Greek. This is the first time they have appeared in one of their stories.