full version https://www.facebook.com/WeirdHollywood/videos/2021-march-pe...
They were really good for their time, and hadn't really aged too badly by the 80s and 90s, so it made good financial sense to repeat them. Combine that with the money to be made from toys and it was a much better deal than forking out for new programmes.
IIRC it was Blue Peter's most requested instructions ever.
Quite a signficant public service by whoever designed that when you think about it.
https://www.bbc.co.uk/cult/classic/bluepeter/makes/tracyisla...
Via https://www.bbc.com/videos/c511wey54g4o ("1993: Tracy Island - Blue Peter")
The next video in the archive is about "this new thing called the Internet", from 1994 https://www.bbc.com/videos/czv20818q2no
Not that the others: Joe 90, Supercar, etc got much in the way of repeats. That said I did enjoy Captain Scarlet and Stingray as a kid.
I think these revivals intentionally capitalise on nostalgia.
https://archive.org/details/zx_Thunderbirds_1985_Firebird_So...
Edit : to set up controls since it's not noted on that page, you'll need to press R ( Redefine keys! ) and that'll get you started!
How to play : you swap between thunderbird 1 and 2 each ship by pressing spacebar ( default ) or whatever you configured it to. You'll notice the ship selected in the bottom left corner of the screen.