A few years back, I built TeleDoom (https://www.youtube.com/watch?v=D3-pje0PpfU) for the TADHack hackathon (http://tadhack.com/).
This allowed you to play Doom by calling a phone number, which connected via a VoIP trunk to an Asterisk server, which read your button presses and translated them into actions in Doom, and then streamed the result back over Twitch - trying to recreate the vibe of 80s/90s TV phone-in games! (These were a thing on Saturday morning TV in the UK.)
I never tested whether it would work with pulse-dial (i.e. rotary) phones - I think that would come down to the VoIP trunk provider!
This involved a VoIP trunk connected ot
When you've got a demon-infested rotary phone, you know progress has struck!
Already looking forward to the next improbable device to play Doom on…
Like a calculator app a friend made called the 'Crapulator'. It lived up to the name but not in the same fashion as the 'wrongulator'.