Promotional game from the Gulf petrol company. Each player is given a 'pad' on which to write their answers. This pad is called in Britain, a Magic Slate. You write on it, then peel the cover and, hey presto, the writing disappears. Everyone plays at the same time. A word is read out and each player spells it as best they can. The first player to get an agreed number right, wins. I suspect this was intended as an in-car game, to pass the time on a long drive. That connection would explain the fact that it was made by a petrol supplier.