Don't want to be pedantic but the answer could be BACKGAMMON rather than LUDO as dice is the plural of die. Only one die used playing LUDO but two DICE used in BACKGAMMON.Maybe I am splitting hairs here.
Hi Suesan
My only suggestion (and I am not overly confident of it) is SURFBOARDING.You have a boarding card to get on a ship or plane and you hopefully float when surfboarding.Not really very happy with this but can think of no other answer.