This reminds me of mid-1970s ASCII computer graphics, except more advanced and orders of magnitude faster. In particular, it brought to mind "Mandala" from the book "What to Do After You Hit Return", which was an amazing book in 1975, full of BASIC games and graphics programs that you could type in. If you want the vibe of early home computers, take a look at this book.

https://archive.org/details/Whattodoafteryouhitreturn/page/n...