The TV shows the questions, and everyone plays along on their phone or laptop.
Under that heading: how playing on a big screen works, in one short sentence: the TV shows the questions, and everyone takes part in the game from their own phone or laptop. "Laptop" is a portable computer: use the language's ordinary word for one (e.g. French "ordinateur portable", German "Laptop"), and for "phone" the ordinary word for a phone that its other texts on Tjaz use (e.g. Danish "telefon", German "Handy")
Ka whakaatu te pouaka whakaata i ngā pātai, ā, ka tākaro tahi te katoa mā ō rātou waea, rorohiko pōnaho rānei.