Pretty sure CBBC did those games once or twice between programmes too. And maybe, if I'm not imagining it, possibly a programme on ITV used the same sort of thing too.
Mind you CBBC's Sunday morning "Sub Zero" programme tried to take the concept to a new level by mixing virtual reality and viewer participation - and managed to make a pigs ear of it. There was a video of it on YouTube but has since vanished.
In fairness to pulse tones, it was (and probably still is) possible for a lot of phones to switch between DTMF and pulse dialling via a switch on the phone, sometimes by accident if it was poor design. Pulse dialling is still an option I believe if you happen to have a rotary phone or even a DOND style Bakelite