They had bingo games running on Teletext in Denmark. There were also interactive pages where you could phone in and press numbers to access a much larger set o

They had bingo games running on Teletext in Denmark. There were also interactive pages where you could phone in and press numbers to access a much larger set of information. You'd get your own temporary page number (that anyone could technically see), and the teletext broadcast equipment would insert your updated page into the stream when you pressed a number.