Also my first computer (though I also had the 8K? expansion). It was already pretty old when I was given mine but it definitely started something. From there to C64, Amiga and then onto PC/Mac where it all started to get a bit boring.
[1] Though there was 1K chess, a mostly complete chess game in 672 bytes https://en.wikipedia.org/wiki/1K_ZX_Chess
Oh, that wobble! Definitely on my short list of the most annoying hardware problems in computing history. You’d spend ages typing in the code for a game from your book, and then just as you were ready to go…