I've just seen Ian was here mentioning it. Great find, quite well buried. Less buried now.
We were chatting about early blind accessible computer games. To replicate the very earliest games that could be played independently (from 1970 onwards) need a working TSI Optacon and suitable camera lens (for print or a CRT monitor). Then, you just need to learn how to read the tactile feedback. Not easy!
Following that would likely have been Calculator Games from the books popular at the time, by a skilled Optacon user (or if the books were transcribed to Braille/audio-cassette) with the TSI Speech+ talking calculator around 1975 on. That's already possible, with any talking calculator.
Replicating the TSI "Game Center" from 1977/78 would be magic, as I don't think there are many left in the world anymore. There's at least one still in existence here: https://aphmuseum.org/record/the-game-c … odel-e1a/. Not sure if it still works. I am hoping to get a TSI Speech+ calculator next month, which has the same speech chip.
Slightly more recent, I've managed to get a batch BBC Micro audio games preserved, although most require a speech synthesiser. Hoping to get an update to BeebEm to make this possible in the old style (output screen text to the printer port, and have that connected to an external speech synth like a Votrax / Dolphin / Braid / Triangle etc. device). Some more info here: https://stardot.org.uk/forums/viewtopic.php?p=405552. The 1983 Pinball game from Yakety Yak software (David Calderwood) is great.
And for anyone wanting to dive down a rabbit hole of audio game history (and I realise tons will be missing) this link may be interesting: https://www.oneswitch.org.uk/art.php?id=352
Fingers crossed someone out there likes the idea of replicating The Game Center as accurately as possible.