Crésus was the French version of the Argentine quiz show El Legado that debuted on commercial station TF1 on July 4, 2005, presented by Vincent Lagaf'. Following a strong summer ratings run, the show was recommissioned, and began its second run in January 2006. Its third and final run ended at the beginning of September 2006.

The show's name was derived from a French proverb, to be 'riche comme Crésus'. Croesus was a notoriously wealthy king of Lydia from 561/560 to 547 BC, and participates in the show as a resurrected, computer-generated skeleton that interjects insults and additional knowledge alongside Lagaf'.